Rugby Positions Explained: All 15

A rugby union team fields 15 players, divided into 8 forwards (shirt numbers 1 to 8) and 7 backs (numbers 9 to 15). The forwards are the bigger, stronger players who win the ball in the set-piece and at the breakdown, while the backs are the faster, more elusive players who move the ball and score most of the tries.

The beauty of rugby’s numbering is that it tells you exactly what each player does. Once you learn the numbers, you can read the whole field at a glance. Here is every position, grouped by unit, with the job each one is built to do.

The two units: forwards and backs

Everything in rugby positional play flows from one split. The forwards (1 to 8) are the “engine room”, heavier players who contest possession in scrums, lineouts, rucks and mauls. The backs (9 to 15) are generally lighter and quicker, tasked with turning that possession into territory and points.

No.	Position	Unit
1	Loosehead prop	Forwards
2	Hooker	Forwards
3	Tighthead prop	Forwards
4 & 5	Locks (second row)	Forwards
6	Blindside flanker	Forwards
7	Openside flanker	Forwards
8	Number 8	Forwards
9	Scrum-half	Backs
10	Fly-half	Backs
11	Left wing	Backs
12	Inside centre	Backs
13	Outside centre	Backs
14	Right wing	Backs
15	Fullback	Backs

The table is the map. From here, it is just a matter of understanding what each group is trying to achieve.

The forwards (1–8): winning the ball

Front row: props and hooker (1, 2, 3)

The two props (1 and 3) and the hooker (2) make up the front row and take the full force of the scrum. The loosehead prop (1) and tighthead prop (3) are among the strongest athletes on the field, holding the scrum steady, while the hooker (2) “hooks” the ball back with his foot and usually throws the ball into the lineout. These are the most physically punishing jobs in the game.

Second row: the locks (4, 5)

The two locks, or second-rowers, are typically the tallest players on the team. They provide the power push in the scrum and are the primary targets in the lineout, lifted into the air to catch the throw. Height, strength and stamina define them.

Back row: flankers and number 8 (6, 7, 8)

The back row is the most mobile part of the pack. The blindside flanker (6) and openside flanker (7) are relentless tacklers and breakdown specialists, with the openside in particular hunting to win turnovers. The number 8 binds at the back of the scrum, carries the ball powerfully and links the forwards to the backs. They are forwards with more of a ball-carrying, roaming brief.

The backs (9–15): using the ball

Halfbacks: scrum-half and fly-half (9, 10)

The scrum-half (9) is the link between forwards and backs, feeding the ball out of scrums and rucks with quick, accurate passes. The fly-half (10) is the tactical director, the player who decides whether to pass, kick or run, and often handles the goal-kicking. Many coaches consider the fly-half the most important decision-maker on the field.

Centres: inside and outside (12, 13)

The inside centre (12) and outside centre (13) combine power and pace in midfield. They break the defensive line, create space for the players outside them, and are crucial tacklers in defense. The 12 is often a strong ball-carrier and distributor; the 13 tends to be quicker and more elusive.

Back three: wings and fullback (11, 14, 15)

The wings (11 and 14) are the team’s fastest players, positioned on the edges to finish moves and score tries. The fullback (15) is the last line of defense, fielding kicks, launching counterattacks and covering the space behind the defensive line. Speed, safe hands under a high ball and reliable tackling define this back three.

How to read a game using the numbers

Because the numbers are standardized, you can instantly tell a forward from a back and even guess a player’s build from his shirt. Big body in the 1–8 range? A forward doing the heavy lifting. A slighter, sprinting player wearing 11 or 14? A wing chasing a try. This shorthand is one of the things that makes rugby easy to follow once you know the code.

If you are new to the sport, the positions make more sense alongside the flow of a match, our guide to how long a rugby match lasts sets the tempo, and what a knock-on is in rugby explains one of the most common stoppages. For a fascinating comparison of roles, rugby versus American football shows how two collision sports divide labor very differently, and rugby union versus rugby league explains why the two rugby codes field different numbers of players.

The short version

A rugby union team has 15 positions: 8 forwards (numbers 1 to 8) who win the ball in scrums, lineouts and rucks, and 7 backs (numbers 9 to 15) who move it and score. The front row and locks provide power, the back row adds mobility, the halfbacks link play, the centres break the line, and the wings and fullback supply the pace and finishing.