A pickup basketball game, a recreational hockey match, a weekend soccer league — someone throws an elbow, delivers a late hit, or swings a stick, and another player ends up seriously hurt. The injured player’s first instinct is often to sue the person who hurt them, and the other side’s first response is almost always the same: this is a contact sports injury, injuries are part of the game, and you cannot sue a fellow player for what happens on the field. That response is partly right and partly wrong, and the difference between the two is what decides whether an injured athlete has a claim in Massachusetts. Getting that distinction right is the whole ballgame, because the same serious injury can be either compensable or not depending entirely on how the other player behaved. An athlete who understands where the line falls is in a far better position to know whether pursuing a claim makes sense.
The competing concerns are easy to see. On one side, sports would be impossible if every hard foul or accidental collision could become a lawsuit; players accept a great deal of rough contact as the price of playing, and the law does not want to referee ordinary athletic aggression. On the other side, agreeing to play a contact sport is not the same as agreeing to be injured by conduct that goes well beyond the bounds of the game — a deliberate blow, or a reckless disregard for a fellow player’s safety. Massachusetts draws the line precisely between those two ideas, and it is a line that protects athletes without turning every game into a potential courtroom. The rule is designed to preserve the freedom to compete while still leaving room for accountability when a player truly crosses a line. It is a balance the Commonwealth has struck deliberately, and it shapes every co-participant injury case. Courts return to that same balancing point every time one of these cases is litigated.
What follows is how Massachusetts treats injuries between co-participants in a contact sport: the recklessness standard that governs these claims, what separates a hard but lawful play from actionable conduct, how the injured player’s own participation factors in, and who else besides the other player may bear responsibility. This is general information, not advice about a specific injury. For the separate question of when a school, league, or program is responsible for a young athlete’s injury, see our discussion of playground and youth-sports injuries.
Can you sue another player for a contact sports injury?
The threshold question is what standard applies when one athlete injures another during play. Massachusetts answers it with a rule that is neither “anything goes” nor “every foul is a lawsuit.” The rule sits deliberately between those two extremes, and understanding where it sits is the key to evaluating any sports-injury claim. It asks not whether someone was hurt, but how the person who hurt them was playing.
The recklessness standard
In Massachusetts, a participant in an athletic contest is not liable to a co-participant for ordinary negligence. The controlling rule, established in Gauvin v. Clark, is that a player owes fellow players a duty not to injure them through reckless disregard for their safety — a standard drawn from the recklessness principles of the Restatement of Torts. Ordinary carelessness, the kind of misjudgment that happens constantly in fast-moving games, is not enough to support a claim. The injured player must show that the other participant acted recklessly or intentionally, not merely that they were careless. This higher bar reflects a deliberate policy: vigorous, even negligent, play is an accepted part of sport, and only conduct that crosses into recklessness or intent exposes a player to liability. This is a meaningful hurdle, and it is the single most important thing to understand about suing a fellow athlete. It means the focus is always on the quality of the conduct, never merely on the severity of the result.
Why the standard is higher in sports
The reason the law demands recklessness rather than mere negligence is rooted in the nature of athletic competition. Players voluntarily enter a physical, fast-paced environment where contact, collisions, and hard fouls are expected and unavoidable, and where split-second decisions routinely go wrong without anyone being blameworthy in a legal sense. If ordinary negligence were the standard, the fear of liability would chill the very aggressiveness and freedom of movement that make sports what they are, and courts would be drawn into second-guessing every play. By setting the bar at reckless disregard, Massachusetts allows athletes to compete hard while still holding accountable those who play with a conscious indifference to the serious risk of harm to others. The standard protects the game and the players at the same time. It lets athletes throw themselves into competition without the constant worry that an unlucky play will land them in court, while still drawing a firm line at genuinely dangerous conduct. That dual purpose is exactly why Massachusetts has held to the recklessness rule.
What this means for an injured athlete
For someone hurt in a game, the practical takeaway is that the claim rises or falls on the character of the other player’s conduct, not simply on the fact of a serious injury. A devastating injury caused by an ordinary, if clumsy, play generally will not support a lawsuit against the other player, while even a less severe injury caused by a reckless or intentional act may. This means the analysis focuses closely on exactly what the other participant did and how far it departed from the normal, accepted conduct of the sport. An injured athlete should not assume they have no claim simply because they were playing a contact sport, nor assume they have one simply because they were badly hurt; the real question is whether the conduct was reckless. Everything in a co-participant case ultimately comes back to that question, and it is where the analysis should begin. A clear-eyed look at what the other player actually did tends to matter far more than how the injury looked or felt.
Hard play versus reckless conduct
The entire case usually turns on which side of the line the other player’s conduct falls: aggressive but accepted play, or a reckless departure from the game. Almost every dispute in these cases is a fight over which category the conduct belongs in. Drawing that line accurately is what separates a viable claim from one that cannot get off the ground.
Conduct that is part of the game
A great deal of hard, even injurious, contact is simply part of playing a contact sport and cannot support a claim. Legal body checks, hard but clean tackles, aggressive rebounding, incidental collisions, and the ordinary fouls that occur in every game are all within the range of conduct players accept when they step onto the field. Even when such contact causes a serious injury, it does not expose the other player to liability, because it is not reckless — it is the sport being played as sports are played. Defendants correctly point to this reality, and in many cases they are right that what happened, however unfortunate, was an inherent risk of the game rather than actionable misconduct. The mere fact that a play was rough, or that it broke a rule, does not by itself make it reckless. Courts recognize that fouls, hard contact, and even injuries are woven into the fabric of competitive sport. Treating every rough play as actionable would be inconsistent with the very nature of the games people choose to play.
Conduct that crosses the line
What separates actionable conduct from ordinary play is a reckless disregard for the safety of others — conduct that goes beyond the risks a player accepts by participating. An intentional blow unrelated to the play, a violent act after the whistle, a deliberate attempt to injure, or conduct so far outside the rules and norms of the sport that it reflects indifference to a known and serious risk can all cross into recklessness. These are the acts that a jury can readily see as something other than playing the game. The question is not whether a rule was broken — games are full of rule violations — but whether the conduct showed conscious disregard for the likelihood of serious harm. A late, deliberate hit aimed at hurting an opponent, or a wild, dangerous act that no reasonable player would consider part of the game, is the kind of conduct that can support a claim even under the demanding recklessness standard. The key is that the conduct reflected indifference to a serious and known risk, rather than the ordinary give-and-take of competition. When an act looks less like playing the game and more like an attack, it moves toward the actionable side of the line.
Why the distinction is fact-intensive
Whether a particular act was reckless or merely part of the game is a fact-intensive question that depends on the specifics of the sport, the situation, and exactly what the player did. The same physical contact might be perfectly normal in one sport and shockingly out of bounds in another, and the norms of the particular game, the stage of play, and the intent behind the act all matter. Because the line is drawn on the facts, these cases often turn on detailed evidence about how the injury happened and how far the conduct strayed from accepted play. This is why a careful reconstruction of the incident — what the other player did, when, and how it compares to the ordinary conduct of the sport — is usually decisive in a co-participant claim. The more precisely the incident can be reconstructed, the clearer it becomes which side of the line the conduct falls on. That factual detail is often worth more than any general characterization of the play.
The injured player’s own participation
Defendants often argue that by choosing to play, the injured athlete gave up any right to complain about what happened. Massachusetts treats that argument with more nuance than the defense suggests. The blanket claim that a player accepted every risk simply by showing up does not hold up under Massachusetts law. What a player accepts, and what they do not, is a more careful question than the defense lets on.
Assumption of risk in sports
The idea that a player “assumed the risk” of injury is really built into the recklessness standard itself. By choosing to participate, an athlete accepts the ordinary risks of the sport — the hard contact, the collisions, the accepted fouls — which is exactly why co-participants are not liable for ordinary negligence. But accepting the normal risks of a game is not the same as accepting the risk of reckless or intentional harm, and a player does not consent to being injured by conduct that falls outside the bounds of the sport. Massachusetts long ago abolished assumption of risk as a standalone defense that bars recovery, so the concept operates here through the duty standard rather than as a separate, claim-ending argument. The related defense that a plaintiff assumed the risk of injury is far weaker in Massachusetts than defendants often claim.
Comparative fault on the field
Where the injured player’s own conduct contributed to the incident, it is handled through comparative negligence rather than as a bar. Under Massachusetts General Laws chapter 231, section 85, a plaintiff’s recovery is reduced by their share of the fault, and barred only if they are more than half responsible. So if an injured athlete’s own reckless play was part of what happened, that can reduce their recovery, but it does not automatically defeat a claim against a co-participant who acted recklessly. The comparative-fault framework lets a jury sort out the relative responsibility of two players rather than forcing an all-or-nothing result. This keeps the focus on the actual conduct of both athletes rather than on the bare fact that the injured person chose to play. Comparative negligence allows the responsibility to be divided in a way that reflects what each athlete actually did. That is a far fairer approach than treating participation itself as a forfeiture of all rights.
Minors and youth sports
When the injured athlete is a child, the analysis carries additional protection, because children are not held to the same standard of care as adults. A young player’s own conduct is measured against what a reasonable child of the same age and experience would do, which makes it even harder to assign meaningful fault to an injured young athlete. Youth sports also raise distinct questions about the responsibility of coaches, leagues, and programs, which are governed by different rules than the player-versus-player standard — a subject covered in our discussion of youth-sports and playground injuries. For an injured child, the combination of the child standard of care and the potential responsibility of adult supervisors often matters more than the co-participant recklessness rule.
Other responsible parties
The other player is not always the only, or even the main, source of responsibility. Some of the strongest claims arising from sports injuries are against parties other than the co-participant. These claims are often overlooked because attention naturally fixes on the player who delivered the blow, but the organization or property owner in the background may bear as much or more responsibility. Looking past the obvious defendant is frequently where the real value of a sports-injury case is found.
Leagues, coaches, and programs
Organizations that run athletic activities can be responsible when their own negligence contributes to an injury — inadequate supervision, poor coaching, mismatched or improperly equipped players, ignored safety rules, or failure to respond appropriately to a dangerous situation. Unlike the recklessness standard that governs player-versus-player claims, a league, coach, or program is generally held to an ordinary standard of reasonable care in how it organizes and supervises the activity. This means a claim against an organizer can succeed on a showing of ordinary negligence, a lower bar than the one that applies between players. Identifying whether an organizing entity dropped the ball is often central to a sports-injury case, particularly where a supervising adult or institution failed to take a basic precaution. Because these entities are judged by an ordinary negligence standard, a claim against them can succeed where a claim against the other player would not. That difference in standards is one of the most important strategic features of a sports-injury case.
Facilities and equipment
The condition of the playing surface, the premises, and the equipment can also give rise to liability separate from anything a co-participant did. A property owner or operator who allows a hazardous field, a dangerous gym floor, defective boards or goals, or other unsafe conditions may be liable to an injured athlete on ordinary premises-liability principles, and a defective piece of protective equipment can support a product claim. These theories do not require proof of recklessness by another player; they turn on the negligence of whoever was responsible for the condition or product. An athlete hurt by a dangerous condition on the property may have a claim even where the contact itself was an ordinary part of the game.
The injuries these cases involve
Contact-sport injuries are frequently severe, and the stakes in getting the responsibility right are high. Head trauma and concussions are a particular concern, and a serious brain injury from a violent hit can carry lasting cognitive and physical consequences. Fractures, torn ligaments, spinal injuries, and other catastrophic injuries can end athletic careers and affect a person’s health and livelihood for years. Because the harm can be so significant, pinning down every responsible party — the reckless player, a negligent organizer, or a careless property owner — is essential to a full recovery for a seriously injured athlete. Overlooking a responsible organizer or property owner can leave significant compensation on the table. A thorough look at everyone who contributed to the injury is part of protecting the full value of the claim.
Recovery and protecting the claim
Because these cases turn on a demanding standard and often involve multiple potential defendants, the way the claim is built matters a great deal. Careful development of both the facts and the responsible parties can be the difference between a full recovery and a case that stalls. These are not claims that succeed on their own; they require deliberate work.
What a claim can recover
An athlete injured by a co-participant’s recklessness, or by the negligence of an organizer or property owner, can generally recover the full measure of the harm: medical expenses, future care, lost income and earning capacity, and compensation for pain, suffering, and the lasting effects of the injury, reduced only by any comparative fault properly assigned to the injured player. Where more than one party contributed — a reckless opponent and a negligent league, for example — each may bear a share of responsibility, which can matter a great deal to the availability of full compensation. The goal is to account for the complete impact of the injury, especially where it carries long-term or career-ending consequences. A serious sports injury can affect a person’s health, livelihood, and quality of life for years, and the compensation should reflect that full scope. Undervaluing the long-term impact is one of the most common ways an injured athlete is shortchanged.
The evidence that matters
Proving a co-participant claim requires detailed evidence about exactly what happened and how far the conduct departed from accepted play. Video of the incident, accounts from other players and officials, knowledge of the rules and norms of the particular sport, and expert testimony about what the conduct reflected can all be critical to showing recklessness rather than ordinary contact. Evidence about the role of organizers, supervisors, and the condition of the facility is equally important where other parties may share responsibility. Because the recklessness line is drawn on the facts, thorough and prompt investigation — before video disappears and memories fade — is often what makes the difference between a provable claim and one that fails for lack of proof. Video in particular can be fleeting, and witnesses scatter once a game ends, so acting quickly to preserve the evidence is critical. The strongest co-participant cases are usually the ones investigated before the record disappears.
When to call a Boston injury lawyer
When a serious injury happens in a game, sorting out whether the other player’s conduct was reckless, and whether a league, coach, or property owner also bears responsibility, takes careful legal analysis that a hurt athlete should not have to attempt alone. A lawyer can evaluate the conduct against the recklessness standard, identify every potentially responsible party, and pursue the full value of the claim; the work is handled on contingency, so there is no fee unless there is a recovery. Our Boston personal injury attorneys handle serious sports and recreation injuries, from head trauma to injuries on unsafe premises, across the Commonwealth and in nearby communities including Quincy and Cambridge, as reflected across our practice areas. If you or your child was seriously hurt in a contact sport, a first conversation costs nothing, and you can reach out to learn whether there is a claim.
Reviewed and Approved By
This article was reviewed by Daniel J. Larson, the founding attorney of Larson Law and a Massachusetts-barred personal injury lawyer in Boston. He represents individuals and families harmed by negligence, including athletes and children injured in sports and recreational activities. Attorney Larson works litigation-first, developing each case through careful investigation, discovery, and expert analysis and preparing it as though it may be tried. Before founding the firm, he defended hospitals, physicians, and other healthcare providers in malpractice litigation at a Boston firm, experience that informs how he anticipates the way insurers and defense counsel evaluate a claim. He is a member of the Massachusetts Bar Association and the Massachusetts Academy of Trial Attorneys.
Frequently asked questions
Can I sue another player who injured me in a contact sport?
Sometimes, but only if their conduct was reckless or intentional, not merely careless. In Massachusetts, a participant is not liable to a fellow player for ordinary negligence; the standard, set in Gauvin v. Clark, requires reckless disregard for another player’s safety. So a serious injury caused by an ordinary, if clumsy, play generally will not support a claim against the other player, while an injury caused by a deliberate or reckless act — conduct well outside the accepted bounds of the game — may. The claim turns on the character of the conduct, not simply on how badly you were hurt.
Why is the standard recklessness instead of ordinary negligence?
Because sports necessarily involve hard, fast, physical contact and split-second decisions that often go wrong without anyone being legally at fault. If ordinary negligence were the standard, the fear of lawsuits would chill the aggressive, free play that makes sports what they are, and courts would be second-guessing every foul. By requiring reckless disregard for safety, Massachusetts lets athletes compete vigorously while still holding accountable those who play with conscious indifference to a serious risk of harm. The higher bar protects both the game and the players.
What is the difference between a hard foul and reckless conduct?
A hard but accepted play — a clean check, an aggressive tackle, an ordinary foul — is part of the game and does not support a claim, even if it causes a serious injury. Reckless conduct goes beyond the risks a player accepts by participating: an intentional blow, a violent act after the whistle, or conduct so far outside the rules and norms of the sport that it reflects indifference to a known, serious risk. Breaking a rule alone does not make conduct reckless; games are full of rule violations. The question is whether the act showed conscious disregard for the likelihood of serious harm.
Does playing the sport mean I assumed the risk of injury?
You accept the ordinary risks of the game — the contact, collisions, and accepted fouls — which is why co-participants are not liable for ordinary negligence. But you do not accept the risk of being injured by reckless or intentional conduct outside the bounds of the sport. Massachusetts abolished assumption of risk as a separate defense that bars recovery, so the concept works through the duty standard rather than as a claim-ending argument. If your own conduct contributed, that is handled through comparative negligence, which reduces recovery by your share of fault rather than eliminating the claim.
Besides the other player, who else might be responsible?
Often the strongest claims are against parties other than the co-participant. A league, coach, or program can be liable on an ordinary negligence standard for inadequate supervision, poor coaching, mismatched players, or ignored safety rules. A property owner may be liable for a hazardous field, dangerous gym floor, or defective equipment on ordinary premises-liability principles. These claims do not require proving another player was reckless — they turn on the negligence of whoever was responsible for the activity, the premises, or the equipment. Identifying every responsible party is often central to a full recovery.
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