What Happens When the Ball Goes Out of Bounds in Lacrosse: 2026 Rules Guide

What do you do when the ball goes out of bounds in lacrosse? In short — play stops, possession is awarded based on either the chase rule (after a shot) or the last-touch rule (everywhere else), and the receiving team restarts from where the ball left the field. This 2026 guide walks UK new players, coaches, parents and rec-league refs through the boundary rules across men's, women's, boys' youth, girls' youth and Sixes lacrosse — including the chase rule, alternate possession and self-start mechanics — so you can call it correctly the next time it happens.

TL;DR

• General rule: when the ball goes out of bounds, possession goes to the team that did NOT touch it last. Play restarts at the spot where it crossed the line.
• The chase rule (shots only): if a shot or deflected shot goes out, possession goes to whichever team has an in-bounds player whose body is closest to where the ball crossed the line — not necessarily the shooter's team.
• Tie or unclear: alternate possession (AP) is used — possession alternates between the two teams every time officials cannot determine who touched it last.
• Restart: in modern boys' and girls' rules the player with possession self-starts at the spot once the official signals "play on" — no formal whistle restart required for most situations.
• Sixes & women's draws: if the ball goes directly out of bounds from a draw, alternate possession is awarded 2m inside the boundary line — different from regular run-of-play.

Out-of-bounds in lacrosse: the rule that confuses every new fan

Lacrosse is one of the few field sports where the team that knocks the ball out can sometimes still keep possession. That rule — the chase rule — sits underneath nearly every "wait, why did they get the ball?" moment that new spectators have. Add in the differences between boys' and girls' rules, between US college (NCAA), youth (USA Lacrosse), high school (NFHS) and international (World Lacrosse) codebooks, and a simple "ball went out" decision can have four different answers depending on the level you're watching.

This guide cuts through that. It is written for UK readers — players new to club lacrosse via England Lacrosse or Scottish Lacrosse, parents whose kids are starting at a school programme, coaches running drills, and rec-league refs who want a quick reference. We'll use the 2025–2026 rule books from World Lacrosse, the 2025–2026 NCAA Men's Rules Book, and the 2026 USA Lacrosse Boys' Youth Rules as our primary references throughout.

Context and audience: who this guide is for

Lacrosse is growing fast in the UK — England Lacrosse reports record participation in school and university programmes, and the sport's Olympic return at LA28 has pulled more newcomers in. With that growth comes a pile of confusion around the rules, especially the boundary rules, because most British sports fans grew up with football or rugby where "out is out, restart is straightforward".

You'll find this useful if you are:

• A new player joining a club, school or university lacrosse team
• A parent watching your child's first season and trying to follow what's happening
• A coach running youth or beginner sessions and explaining boundary calls
• A rec-league official, table-crew volunteer or assistant ref who needs a quick reminder
• A fan transitioning from another stick sport (hockey, hurling) where boundaries work differently

If you're more interested in the recovery side of lacrosse balls — using one for myofascial release, foot rolling or trigger-point work — see our guide to using a lacrosse ball for massage. This post is the rules explainer for the actual sport.

What do you do when the ball goes out of bounds in lacrosse: the general rule

Across every code of lacrosse — men's, women's, boys' youth, girls' youth, Sixes, box — the underlying principle is the same: when the ball goes out of bounds, play stops, and possession is decided by one of three mechanisms.

1. Last-touch rule (default). Whichever team's player last touched the ball before it went out loses possession. The other team gets it. This applies to passes that go wide, ground balls knocked over the line, and most run-of-play situations.
2. Chase rule (shots only). If the ball goes out as the result of a shot or deflected shot at the goal, possession goes to whichever team has an in-bounds player whose body — not stick — is nearest to where the ball crossed the line. The shooter's team can keep possession even though they put it out.
3. Alternate possession (AP). If officials cannot determine who touched the ball last, or if the ball goes out simultaneously off two players, possession alternates between the teams using the AP system. The Upper Midwest Lacrosse Officials Association's Rule 4 commentary sets out exactly when AP is invoked.

Once possession is awarded, the player restarts from where the ball went out — usually with a self-start (more on that below). There is no throw-in, no scrum, no line-up like rugby or football. Play resumes the moment the official signals it.

The chase rule: lacrosse's signature boundary call

The chase rule is the bit that surprises every newcomer. In football, if a striker shoots and the ball goes wide, the defending team takes a goal kick. Simple. In lacrosse, if an attacker shoots and the ball goes wide of the net, possession can still go to the attacking team — provided one of their players sprints (chases) to the spot the ball crossed the end line and gets there before any defender does.

The exact wording

Per the NCAA men's rule book and mirrored across NFHS and youth rules: "When a loose ball goes out of bounds as the result of a shot or deflected shot at the goal, it shall be awarded to the team that had an in-bounds player's body nearest to the ball when it became an out-of-bounds ball, at the point where it was declared out of bounds."

Three things to notice:

• Body, not stick. Your stick can be inches from the line and you'll still lose the chase if your body is further away than your opponent's.
• When it went out, not where players ended up. The official judges the moment the ball crossed the line, not where the players are after they slow down.
• In-bounds. If you cross the line yourself, you're out of the chase entirely. Players slide their feet to stay in.

Why the rule exists

Historically, lacrosse was played on open ground without boundaries. The chase rule preserves that spirit — it rewards effort and hustle. A team that takes a wild shot can recover possession if they back up the play; a team that gives up on a shot loses it. The Premier Lacrosse League's history of the run out traces this lineage back to the indigenous origins of the sport, and it's why coaches drill "back up every shot" from the very first practice.

What about ties?

If two opposing in-bounds players are equidistant from the ball when it crosses the line, the official invokes alternate possession instead of trying to split hairs. This stops disputes and keeps the game moving.

Run-of-play out of bounds: the last-touch rule

Outside of shots, the rule is simpler. Whoever touched it last loses it. A bad pass that sails over the sideline goes to the other team. A ground ball that gets knocked out by an attacking midfielder goes to the defence. A clearing pass that drifts wide goes to the team trying to ride.

One nuance: if the ball goes out off a defender's stick while the defender is trying to clear, possession goes back to the attacking team. The defender's intent doesn't matter — the rule is purely "last touched it, lost it". This is why coaches drill clean, body-shielded clears under pressure rather than pinging cross-field passes near the sideline.

Boys' versus girls' lacrosse: the differences that matter

The headline rules above apply to both, but the details diverge. Here's the summary for UK readers, who often see both codes at the same school or club.

Boys' / men's lacrosse

• Last-touch and chase rule both apply as described above.
• Restart is via self-start at the spot where the ball went out, once the player has a foot in-bounds and the official signals.
• The 2024 NFHS boys' rule changes (carried into 2025–2026) tightened the requirement for officials to administer restarts within five seconds of the ball being out, to keep pace of play high.

Girls' / women's lacrosse

• Same chase-rule and last-touch logic.
• Self-start is mandatory: the player must start play from where the ball went out, with a foot inside the line, and cannot make her first action a pass — she must move the ball or be moved on by an opponent's pressure first.
• If the ball goes directly out of bounds from a legal draw, the restart is alternate possession, awarded 2m inside the boundary line. This is set out in the 2025–2026 World Lacrosse Women's Field Rulebook.
• Stick checks for ball control are stricter, so "did the ball cross the line cleanly in her stick?" matters more than in the boys' game.

Sixes lacrosse (the Olympic format for LA28)

• Played on a smaller pitch with six players a side and a 30-second shot clock.
• Boundary rules track the World Lacrosse Sixes 2026–2028 rule book — chase rule applies on shots, last-touch on everything else.
• Self-start is universal. The compressed format means out-of-bounds calls happen more often per minute, so officials are trained to restart fast.

Self-start: how the restart actually works

Self-start is the modern restart mechanism in both boys' and girls' lacrosse. Once possession is awarded, the player:

1. Goes to the spot the ball crossed the line (or 2m in from the line, depending on rule set).
2. Places one foot inside the boundary, holding the ball in their stick.
3. Waits for the official to signal "play on" — usually a verbal call plus a hand signal.
4. Resumes play immediately. There is no whistle in most situations.

The point of self-start is pace. Older rule sets used a formal restart with a whistle, which slowed games down. The modern self-start, introduced progressively across rule sets through the 2010s and 2020s, keeps the ball moving and rewards teams that transition quickly. USA Lacrosse's official self-start FAQ covers the edge cases — what counts as a legal foot position, what to do when an opponent isn't 5m away yet, and when an official can deny self-start.

Common scenarios decoded

"Their attacker shot wide and they still got possession"

Chase rule. The shooter's team had a player closer to the spot the ball crossed the end line than the defending team did. Coaches call this "backing up the shot" — usually it's an attackman or a crashing midfielder positioned behind the goal specifically for this moment.

"The defender knocked the ball out clearing — why did the attack get it back?"

Last-touch rule. The defender was the last to touch the ball. The fact that they were trying to clear out, not score, is irrelevant.

"The ref called alternate possession — what is that?"

The officials couldn't determine who touched the ball last (often after a scrum or simultaneous knockout). AP gives one team possession this time, the other team next time, alternating throughout the game. The NFHS FAQ on boundaries and restarts has a clear explainer of when AP applies.

"The ball went straight out from the draw"

In women's and Sixes lacrosse, that triggers alternate possession 2m inside the boundary. In boys' lacrosse from a face-off, the ball going directly out is treated as last-touch where possible, otherwise AP.

"I saw a player run all the way around the back of the goal to keep possession"

Legal — that's chasing a shot. Lacrosse has no "behind the goal" zone like ice hockey does in terms of restrictions, so attackers regularly play behind the net, and they can chase a shot that sails past the goal anywhere along the end line.

Tactics: how teams use the boundary rules

Knowing the rules is half the battle. The other half is using them. A few patterns you'll see at any decent level of lacrosse:

• "Back up every shot." Attacking teams position one or two players behind the goal so they can chase any shot that misses. The closest body to the end line wins the chase.
• Shooting from outside angles to bait the chase. A skilled attacker can shoot from a low angle to deliberately put the ball out near a teammate who's already positioned for the chase.
• Defensive end-line discipline. A goalie who slides out to back up the goal can be the closest body if the shot goes wide — turning a missed shot into immediate clearing possession.
• Sideline pressure on the self-start. Defenders try to stand within the 5m radius of the player about to self-start, slowing the restart and giving the defence time to set.

How the rules affect equipment choice

The actual lacrosse ball used in match play is a NOCSAE-spec rubber ball, regulated for size, weight and bounce. The same ball — or a near-identical one — is what most people use for myofascial release at home, which is why our guide to lacrosse ball pricing is one of our most-read posts. For the sport itself, you don't choose differently because of the boundary rules; you do, however, want a consistent set of balls on the sideline because chase-rule scenarios mean the ball gets retrieved from off-field a lot, and a ball that's wet, muddy or scuffed plays differently when re-entered.

Once practice ends, that same lacrosse ball is also one of the cheapest, most effective recovery tools in any kit bag — pressed into a tight calf, glute or pec to release post-training tension. We'll come back to the recovery angle in the conclusion.

FAQs

What do you do when the ball goes out of bounds in lacrosse from a regular pass?

Possession goes to the team that did not touch the ball last. The opposing player picks the ball up, takes it to the spot it crossed the line, places one foot in-bounds, and self-starts once the official signals play on. There is no throw-in or formal restart in modern boys' and girls' rules — pace of play is preserved by self-start.

What is the chase rule in lacrosse?

The chase rule says that when a shot or deflected shot at the goal goes out of bounds, possession is awarded to whichever team has an in-bounds player whose body is closest to where the ball crossed the line — not the team that took the shot, and not the player whose stick is closest. It's why attackers "back up" every shot and why goalies often slide out to chase wide shots themselves.

Does the chase rule apply to passes that go out of bounds?

No. The chase rule is shot-specific — it applies only to shots or deflected shots at the goal. Passes, ground balls, clearing attempts and any other run-of-play situation use the last-touch rule: whichever team touched the ball last loses possession.

Can the goalie be the closest player on a chase?

Yes. The chase rule refers to any in-bounds player's body, and goalies are explicitly included. A goalie who slides out of the crease and runs toward the end line to back up a wide shot can absolutely win the chase and keep possession for the defending team. It's a high-skill move and a regular feature of college and international lacrosse.

What happens if both players reach the boundary at the same time?

If two opposing in-bounds players are equidistant from the ball when it crosses the line, the official invokes alternate possession (AP) instead of trying to call a tie. AP alternates between the two teams every time it's invoked across the game, so it remains fair over the course of a match.

Are the out-of-bounds rules different in girls' lacrosse?

The core principles are the same — chase rule on shots, last-touch on everything else — but girls' and women's lacrosse uses a stricter self-start where the player cannot pass as her first action, and a ball going directly out from a draw triggers alternate possession 2m inside the boundary. Boys' rules are slightly more permissive on the first-action restart.

What about box lacrosse and Sixes?

Box lacrosse (played indoors with six players a side on a hockey-rink-style surface with walls) has no out of bounds — the walls keep the ball in. Sixes, the Olympic format coming to LA28, is played outdoors with boundaries; it follows the same chase and last-touch logic as field lacrosse but with self-start universal and tighter timing because of the 30-second shot clock.

Conclusion

So — what do you do when the ball goes out of bounds in lacrosse? You let the official decide between three options. Most of the time it's last-touch: the team that didn't touch it last gets it. On a shot, it's the chase rule: whoever has a body closest to the line gets it, even if their team took the shot. And when it's genuinely unclear, alternate possession steps in. The receiving player goes to the spot, plants a foot in, and self-starts the moment the official signals play on. No whistle, no scrum, no line-up — just immediate restart.

Once you've internalised those three mechanisms, watching lacrosse becomes much easier. The chase rule in particular goes from "wait, why?" to "oh, that's clever" within about three games. And after a long training session — whether you're an attacker, defender, midfielder or goalie — that same NOCSAE-spec rubber ball you've been chasing all afternoon doubles as one of the most effective post-training myofascial-release tools you can own. Our Flexa.fit Lacrosse Ball is the same density and spec used in match play, which is why so many UK club players keep one in their kit bag for both purposes.

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This article is for informational purposes only and is not a substitute for the official rule book of the governing body running your competition. Always defer to the published rules of your league — World Lacrosse, NCAA, NFHS, USA Lacrosse, England Lacrosse — for definitive interpretations and any in-season rule updates.