Rugby Union vs Rugby League: Key Differences
While rugby league and rugby union ultimately started as the same sport and share many similarities, the evolution of rugby over time has turned the sport into two completely separate entities. Although some differences are apparent, newcomers to rugby may need a helping hand to identify where the nuances lie. But don’t worry this guide is here to help!
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Rugby Union vs Rugby League: History

The Origins of Rugby Union
Originally referred to as rugby football, rugby union began in the early 19th century in Northern England, evolving from various forms of football played in schools. So the story goes; a young William Webb Ellis picked up a football at school in 1823 and the game he invented became quite popular. Rugby football clubs started to pop up around the world, but in England, the game began to become more codified with the Rugby Football Union (RFU) being formed in 1871.
The Great Split: The Birth Of Rugby League
The split between rugby union and rugby league occurred on August 29, 1895, at the George Hotel in Huddersfield. Disagreements over professionalism drove this division. Northern English clubs, representing working-class players, demanded "broken time" payments to compensate players for lost wages due to rugby commitments. The RFU's strict amateurism policy rejected these demands, leading 22 clubs to form the Northern Rugby Football Union (later renamed Rugby League in 1922).
Rugby League vs Rugby Union: Game Differences
Both games have developed over the years, with growing gameplay differences between the two. In both rugby union and league within the 80 minutes of the game, players must pass the ball backwards, but this is where most of the similarities end.
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Rugby Union comprises 15 players, whereas rugby league is made up of just 13 players.
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In rugby union, scrums are fiercely contested by eight players from each team, often involving resets and strategies to drive opponents back or win penalties.
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Rugby league scrums are less physical and involve six players. They are primarily used as a quick restart mechanism after knock-ons or forward passes.
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Rugby union features lineouts where players lift teammates to catch the ball after it goes out of play.
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Rugby league does not have lineouts. Instead, play resumes with a tap-and-go kick off the boot.
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Rugby union rucks form after tackles, creating competitive scenarios to retain possession.
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Rugby league uses the "play-the-ball" system: the tackled player gets up, places the ball on the ground, steps over it, and rolls it backwards with their foot. The term "ruck" is still used in rugby league but refers to space behind the play-the-ball.
Differences in Ball-in-Play Time and Pitch Dimensions
Rugby league has gained a reputation for offering more continuous gameplay and excitement due to its longer ball-in-play time than rugby union. In professional matches, rugby league typically sees the ball in play for around 50 minutes out of the 80-minute game, whereas rugby union averages closer to 35 minutes. This faster pace and fewer stoppages make rugby league particularly appealing to fans seeking dynamic action.
Pitch Dimensions
The dimensions of the pitch also differ slightly between rugby union and rugby league:
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Rugby Union: Pitches can measure up to 144m in length and 70m in width, including the in-goal areas.
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Rugby League: Pitches are slightly smaller, with a maximum length of 122.68m and similar widths.
Markings
While both types of pitches feature try-lines, a halfway line, touchlines, and dead-ball lines, their markings diverge:
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Rugby Union: Includes additional lines such as 10-metre lines on either side of the halfway line, a 22-metre line, and a five-metre line leading to the try-line. These markings support Union's complex gameplay strategies involving rucks, mauls, and penalties.
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Rugby League: Marked in ten-metre intervals to assist referees with offsides. A solid red line at the 40-metre mark helps with strategic plays like the "40:20 kick." Rugby league’s simpler marking system reflects its streamlined rules compared to union.
Gameplay Innovations
Rugby league's "40:20 kick" rule inspired rugby union's "50:22" rule, showcasing how both sports continue to evolve while maintaining their distinct identities.
By understanding these differences, fans can better appreciate the unique features that define each code.
Rugby League vs Rugby Union: The Rules / Laws
While rugby union and rugby league share the same method for scoring a try - grounding the ball over the opponent's try line - the value of a try differs between the two sports. Here's a breakdown of the scoring differences:
Scoring Play |
Rugby League Points |
Rugby Union Points |
Try |
4 |
5 |
Conversion |
2 |
2 |
Penalty Kick |
2 |
3 |
Drop Goal/Drop Kick |
1 |
3 |
The ‘Set of Six’ Rule
Introduced in 1972, the "set of six" rule revolutionised rugby league by limiting the attacking team to six tackles to progress downfield and score a try. Possession is handed over to the opposition if the team fails to score within these six tackles. This rule encourages strategic gameplay, with teams often opting to kick on the fifth tackle to gain field position, similar to NFL teams punting on fourth down.
The Sin Bin
Yellow cards in rugby league and rugby union result in players spending 10 minutes in the sin bin for foul play or indiscipline. Rugby league pioneered the sin bin concept in the 1980s, inspiring rugby union to adopt it during a Six Nations experiment in 2000, which became an official law a year later. This adaptation reflects rugby union's trend of learning from rugby league innovations.
The 50:22 Kick
World Rugby introduced the 50:22 kick as a law trial in 2021, fully adopting it in 2022. This rule allows a team to retain possession if they kick the ball from inside their half and it exits play within their opponent's 22-metre area. Derived from rugby league’s 40:20 kick, this law rewards tactical kicking and field positioning.
Impact of Rule Adaptations
Both the "set of six" and kicking rules emphasise rewarding skilful play while maintaining game flow. These innovations have influenced rugby union's evolution, showcasing how both sports continue to learn from each other while preserving their unique identities.
Rugby League vs Rugby Union: Positions and Replacements
Squad Sizes and Substitutions
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Rugby Union: Elite squads have 23 players, with 15 starters and 8 replacements. All replacements can be utilised during the game, including temporary substitutions for head injury assessments (HIA) or blood injuries, which are not necessarily permanent.
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Rugby League: Squads feature 17 players, with 13 starters and 4 interchange players on the bench. Teams typically have up to 8 interchanges per game, although additional interchanges may be allowed in exceptional circumstances, such as concussion protocols.
Player Positions
Rugby Union:
The positions in rugby union are numbered from 1 to 15 and are as follows:
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Loosehead Prop
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Hooker
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Tighthead Prop
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Lock/Second Row
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Lock/Second Row
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Blindside Flanker
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Openside Flanker
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Number Eight
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Scrum-Half
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Fly-Half
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Left Wing
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Inside Centre
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Outside Centre
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Right Wing
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Full-Back
Rugby League:
Rugby league positions are numbered from 1 to 13 and reflect a streamlined player structure:
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Full-Back
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Right Wing
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Right Centre
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Left Centre
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Left Wing
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Stand-Off/Five-Eighth
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Scrum-Half/Half-Back
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Prop
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Hooker/Dummy-Half
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Prop
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Second Row
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Second Row
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Loose Forward/Lock
Key Differences in Gameplay Roles
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Rugby Union: Flankers (positions 6 and 7) play a critical role in breakdowns and tackling, which are absent in rugby league due to fewer players on the field.
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Rugby League: The dummy-half (position 9) acts similarly to a union scrum-half by passing the ball out from the play-the-ball area, while the stand-off and scrum-half often function as dual playmakers akin to two fly-halves in union.
Strategic Gameplay
The streamlined squad structure and positional roles in rugby league emphasise faster gameplay and fewer stoppages, while rugby union’s larger squads and specialised positions promote more tactical depth and set-piece strategies.
These distinctions highlight how each sport tailors its player roles and squad dynamics to suit its unique gameplay style, offering fans varied experiences on the field.
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