There is no mutual combat law in Michigan. Two people who agree to fight can both be arrested and charged with assault, because the state’s assault statutes contain no exception for consent or voluntary participation. The idea does appear in Michigan law, but only in a narrow way that cuts against a fighter: once someone willingly enters a fight, they lose the usual right to stand their ground if the encounter escalates to deadly force.
Agreeing to Fight Does Not Make It Legal
Michigan’s basic assault and battery statute, MCL 750.81, defines the offense and sets the penalty without carving out any room for mutual consent. A simple assault or battery is a misdemeanor punishable by up to 93 days in jail, a fine of up to $500, or both. The only exception the statute names is for “necessary reasonable physical force” under the Revised School Code. Nothing about willing participants, agreed-upon fights, or mutual affrays appears anywhere in the text.1Michigan Legislature. MCL 750.81 – Assault or Assault and Battery
If someone gets hurt, the charges get worse. Under MCL 750.81a, an assault without a weapon that causes serious or aggravated injury is a misdemeanor carrying up to a year in jail and a fine of up to $1,000.2Michigan Legislature. MCL 750.81a – Assault; Infliction of Serious or Aggravated Injury Felony-level charges exist for conduct involving weapons, intent to do great bodily harm, strangulation, and intent to kill.3Justia. Michigan Penal Code Chapter XI – Assault and Battery None of these treat the other person’s consent as a shield against prosecution. The state, not the other participant, is the party bringing the charges, and the state has not agreed to anything.
Mutual Combat Weakens a Self-Defense Claim
The place mutual combat actually shows up in Michigan law is in cases where a fight turned fatal and the defendant claims self-defense. The controlling decision is People v. Riddle, decided by the Michigan Supreme Court in 2002. The court called necessity the “touchstone of any claim of self-defense” and held that a person who voluntarily enters a nondeadly fight has a duty to retreat before resorting to deadly force if that fight escalates.4FindLaw. People v Riddle, 467 Mich 116
That duty is a departure from the ordinary Michigan rule. A person who is not committing a crime and is somewhere they have a legal right to be normally has no obligation to retreat. The Riddle court carved out a single exception for voluntary participants in “mutual, nondeadly combat,” reasoning that such a person is “at fault” and must retreat to a safe position before using lethal force. The court used the old common-law phrase “retreat to the wall”: every reasonable and safe way out must be exhausted first.5Michigan Courts. People v Reese, No 142913
Michigan’s model criminal jury instructions put the same rule in front of jurors. M Crim JI 7.15 tells jurors that a person is “not justified in using deadly force if he is the initial aggressor, or if he is involved in mutual combat, unless he has withdrawn from the encounter and communicated that withdrawal to the other person.”6Michigan Bar. Michigan Model Criminal Jury Instructions 7.15 and 7.16 Withdrawing is not enough on its own. The other person has to be told.
Michigan’s Self-Defense Act, enacted in 2006 and codified at MCL 780.972, lets a person use deadly force anywhere they have a legal right to be, without any duty to retreat, when they honestly and reasonably believe it is necessary to prevent imminent death, great bodily harm, or sexual assault. The protection comes with a condition: it applies only to someone “who has not or is not engaged in the commission of a crime.”7Michigan Legislature. MCL 780.972 – Use of Deadly Force Because participating in a fight can itself be criminal assault under MCL 750.81, a mutual combatant may fall outside the statute’s coverage from the start.
The Castle Doctrine Does Not Reach the Yard
The Riddle court recognized one place where even a mutual combatant keeps the right to stand their ground: inside their own dwelling. Michigan’s castle doctrine removes the retreat obligation for someone attacked in their home, including attached structures like a garage or deck. The court was explicit that the protection stops at the dwelling itself. In Riddle, the shooting happened in the defendant’s backyard, and the court held that the driveway and yard — the curtilage — were outside the castle doctrine’s reach.4FindLaw. People v Riddle, 467 Mich 116
Consent Is a Defense in a Civil Lawsuit
Criminal law and civil law split on this question. On the civil side, Michigan does recognize “consent by voluntarily entering a mutual affray” as an affirmative defense to a tort claim for assault and battery.8ICLE. Assault and Battery – Affirmative Defenses If two people agree to fight and one gets hurt, the injured person may struggle to recover money damages because the other side can point to the plaintiff’s consent to the risk.
That civil defense does nothing to stop a criminal prosecution. A prosecutor can still file assault charges against both participants regardless of what either of them agreed to beforehand.
States That Do Have Mutual Combat Provisions
Readers sometimes hear about “mutual combat laws” from social media and assume Michigan has one. Only two places in the United States have specific provisions treating consent as a meaningful defense to fighting charges, and neither is in Michigan.
- Seattle, Washington, has a 1973 municipal ordinance (Seattle Municipal Code 12A.06.025) that permits consensual fistfights as long as participants agree and the fight poses no danger to bystanders or property. It is a city ordinance, not a Washington state law.9Courthouse News Service. The Myth and Promise of Mutual Combat Laws
- Texas Penal Code § 22.06 makes consent an affirmative defense to assault, provided no weapons are used, no serious bodily injury occurs, and consent is given without coercion. The defendant bears the burden of proving consent.10FindLaw. Texas Penal Code § 22.06 – Consent as Defense to Assaultive Conduct
Even in those places, police departments in Houston, Austin, Dallas, and Seattle have said they will not referee street fights and will step in to stop them, and participants can still face disorderly conduct or other charges.9Courthouse News Service. The Myth and Promise of Mutual Combat Laws In Michigan, the comparison stops before it starts: there is no local or state analogue to either rule. Agreeing to a fight exposes both people to criminal charges, and if the fight turns deadly, the one who agreed to be there carries a heavier legal burden to justify what happened next.