The ruck
How a ruck forms in rugby union and what changes the moment it does — the offside line, the ban on handling, the requirement to join from behind, and how a ruck ends.
Overview
A ruck is the contest for a ball on the ground. Law 15 sets a low bar for forming one: at least one player from each team in contact, on their feet and over the ball, which is on the ground. A ruck may only occur in the field of play.
The moment a ruck forms, the rules change. Handling the ball becomes illegal, an offside line appears, and every arriving player must enter from a specific direction.
What changes when the ruck forms
Once a ruck has formed, no player may handle the ball unless they were able to get their hands on it before the ruck formed. This single clause is what makes the timing of a jackal attempt so critical: hands on the ball a fraction earlier is legal, a fraction later is a penalty.
Each team also gains an offside line running parallel to the try line through the hindmost point of any ruck participant. If that point reaches the try line, the offside line becomes the try line itself.
Joining a ruck legally
An arriving player must be on their feet and join from behind their offside line. They may join alongside but not in front of the hindmost player, and must bind onto a team-mate or an opposition player.
Binding is not optional contact. A player who arrives without binding is not in the ruck — they are simply a player running into other players, which is why "off feet" and "no bind" are two of the most frequent penalties at the breakdown.
Safety and the end of the ruck
Players may not intentionally collapse a ruck or step on other players, and players on the ground must attempt to move away from the ball.
The ruck ends, and play continues, when the ball leaves the ruck, or when the player playing the ball away has lifted it from the ground. From that instant handling is legal again and the offside line disappears.
Key points
- A ruck needs only one player from each team, on their feet, over a ball on the ground.
- Handling becomes illegal unless hands were on the ball before the ruck formed.
- Arriving players must be on their feet, join from behind, and bind.
- The offside line runs through the hindmost point of any participant.
- The ruck ends when the ball leaves it or is lifted from the ground.
Where it’s used
Sports that use the ruck:
Related rules
Offside
A rule that prevents an attacker from gaining an advantage by being positioned too close to the opponents' goal ahead of the ball and the last defenders.
Yellow and red cards
The disciplinary cards a football referee shows to caution or send off a player for misconduct.
Offside in rugby union
Rugby union's most context-dependent law — where the offside line sits in open play, what an offside player must not do, the 10-metre rule after a kick, and how a player is put onside.
Sources
The rules, dimensions and specifications on this page were read from these documents.
- Laws of the Game: Rugby Union — World Rugby, Law 15 — Ruck (read 2026-09-12)
How it connects
The meaning-bearing relationships that place The ruck in the wider knowledge graph — each one with the reason it exists.
Builds on
Understanding these first makes this one make sense.
Prerequisite of
These need this one first.
Commonly confused with
Close enough to be mixed up — the distinction is worth knowing.
Frequently learned together
Taught side by side in the same stage of a learning path.
- OffsideBoth are taught in the “Get to know the game” stage of the Rugby learning path.
- Yellow and red cardsBoth are taught in the “Get to know the game” stage of the Rugby learning path.
- Offside in rugby unionBoth are taught in the “Get to know the game” stage of the Rugby learning path.
- The tackleBoth are taught in the “Get to know the game” stage of the Rugby learning path.
- The maulBoth are taught in the “Get to know the game” stage of the Rugby learning path.
Part of
The wider grouping this belongs to.
Explore across the knowledge base
Follow the threads that connect The ruck to the rest of SocialSportHub.
Tactics
- Phase playHow rugby union teams attack by keeping the ball through successive rucks — what a phase is, why phases move a defence, and the cost that eventually makes a team stop.
- Breakdown strategyThe contest that decides most rugby union matches — when to commit players to a ruck and when to leave it, what a jackal is trying to do, and why the counter-ruck is a gamble.
- Offside trapA defensive football tactic where the back line steps up together to leave an attacker offside.
- Territory versus possessionRugby union's central strategic trade — when to keep the ball and when to kick it away — and why the 22-metre line makes field position worth more than possession in some parts of the field.
Techniques
- Rugby union tackling techniqueHow a tackle is made safely and legally — where to place the head and shoulder, the height the Laws require, and why technique is a safety question before it is a performance one.
- The slice in tennisThe underspin stroke that changes a rally's height and pace — how slice keeps the ball low, when it is defensive and when it is an attack, and what it does on different surfaces.
- Kicking in rugby unionThe kicks rugby union is played with — punt, grubber, box kick, up-and-under, drop kick and place kick — what each achieves and which law governs its use.
- Rugby union passingHow a rugby pass is actually made — the sideways swing that replaces a throw, why every pass must travel backwards, and what separates a spiral pass from a pop.
Learning paths
Positions
- Rugby union forwardsThe eight players who contest the set piece — front row, locks and back row — what each unit does at scrum, lineout and breakdown, and why the roles are so specialised.
- Rugby union backsThe seven players who attack the space the forwards create — scrum-half, fly-half, centres, wings and fullback — what each does in attack and defence, and how the line is organised.
- Ice hockey positionsThe six players on the ice and what each does — centre, two wings, two defence and the goaltender — plus why hockey substitutes in lines rather than individually.
- HookerThe hooker is a front-row forward in rugby who wins the ball in the scrum and typically throws the ball into the line-out.
Go deeper with The ruck
Everywhere else on the platform that covers The ruck — assembled from what actually references it, so nothing here is a dead end.
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Structured courses and paths on the platform that cover this directly.
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How this page is maintained
- Content type
- Rule
- Provenance
- Tier A — evergreen educational
- Verified external sources
- 0
- Content updated
- 2026-09-01
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