Rugby Positions Explained: Complete Guide to Player Roles

Curious about who does what on a rugby field? A rugby union team fields 15 players at once, and every one of them wears a jersey number that tells you their job. From the heavy-hitting forwards who win the ball to the quick backs who score with it, each role has its own skills and responsibilities. This beginner-friendly guide walks through all 15 roles, their jersey numbers and how they fit together — including the New Zealand names you will hear on match day. Whether you are new to the game or want a deeper tactical understanding, you will finish knowing exactly what a loosehead prop, a halfback or a fullback actually does.

How a Rugby Union Team Is Organised

Rugby suits players of almost every shape and size, which is one reason the sport is so inclusive. A starting team of 15 is split into two groups: eight forwards (jersey numbers 1 to 8) and seven backs (numbers 9 to 15). Forwards are generally bigger and stronger and do the physical work of winning possession; backs are generally faster and use that possession to attack space. If you are still learning how to play rugby, understanding these two groups is the fastest way to make sense of a match.

Since 1967, jersey numbers have been standardised for international rugby, so number 1 is always the loosehead prop and number 15 is always the fullback. Replacements on the bench wear 16 to 23. This consistency means you can identify any player’s role at a glance, wherever the game is played.

The Forwards (Numbers 1–8)

The eight forwards are collectively called the pack. They are divided into three units: the front row, the second row and the back row. Together they contest the set pieces — the scrum and the lineout — and do most of the close-quarter work at rucks and mauls. They may not always grab the headlines, but they lay the physical foundation that lets the backs play.

Props (Numbers 1 and 3)

The two props are the loosehead prop (number 1) and the tighthead prop (number 3). They are usually the heaviest players in the team and form the cornerstone of the scrum, absorbing and generating enormous force. A scrum is a contest where the two packs bind together and push for the ball. Beyond scrummaging, modern props also carry the ball into contact, make tackles and clear opponents away from the ball at the breakdown.

Hooker (Number 2)

The hooker (number 2) sits between the two props in the front row and uses their feet to ‘hook’ the ball back through the scrum to win possession. The hooker also usually throws the ball into the lineout, a skill that demands real accuracy under pressure. In open play, hookers are busy link players who carry, tackle and pass much like a loose forward.

Locks / Second Row (Numbers 4 and 5)

Behind the front row stand the locks, also called the second row (numbers 4 and 5). Typically the tallest players on the field, they are the main targets in the lineout, where teammates lift them to catch the ball. In the scrum they bind behind the props and supply the driving power. Around the field they carry into heavy traffic, tackle hard and are often described as the pack’s engine room.

Back Row: Flankers and Number 8 (Numbers 6, 7 and 8)

The back row, or loose forwards, is made up of the blindside flanker (number 6), the openside flanker (number 7) and the number 8. These players combine the toughness of tight forwards with more mobility. Flankers hunt at the breakdown — the contest for the ball after a tackle — to slow opposition possession and win turnovers, so they need speed, tackling and stamina in equal measure.

The number 8 packs down at the back of the scrum and is the main link between the pack and the backs. With the ball at the base of the scrum, the number 8 can pick and drive over the gain line or feed the halfback, making them central to both attack and defence.

The Backs (Numbers 9–15)

The backs are usually the quickest and most agile players, and they tend to grab the highlights with clean breaks and tries. But the backline is about far more than attacking flair: defensive positioning, high-ball catching and try-saving tackles are just as important. Good backs balance creativity with discipline, and the best sides use sharp handling and tactical kicking to control where the game is played. This is the classic backline of 15s rugby, and how these roles match up is one of the factors analysts weigh when they look at rugby betting odds.

Halfback and First Five-Eighth (Numbers 9 and 10)

The scrum-half (number 9) and fly-half (number 10) are the team’s chief decision-makers. In New Zealand the number 9 is usually called the halfback and the number 10 the first five-eighth.

The halfback links the forwards to the backs. Often the smallest player on the field, they make up for it with speed of thought and a fast, accurate pass, clearing the ball quickly from scrums, rucks and mauls so the attack keeps moving.

The first five-eighth (fly-half) is the tactical driver of the team, choosing when to pass, run or kick and controlling field position. An elite number 10 stays calm under pressure, kicks accurately from hand and can spot and attack weaknesses in the defensive line.

Centres (Numbers 12 and 13)

The midfield is made up of the inside centre (number 12) and the outside centre (number 13). In New Zealand the number 12 is traditionally called the second five-eighth. The inside centre is often a bigger, ball-carrying player who acts as a second playmaker, while the outside centre tends to have more acceleration to attack the wider channels. In defence, the centres anchor the midfield and organise the line to shut down attacking overlaps.

Wings and Fullback (Numbers 11, 14 and 15)

The back three are the two wings (number 11 on the left, number 14 on the right) and the fullback (number 15). These are usually the fastest players in the squad and the ones who turn defence into attack in a matter of seconds.

Wings are the finishers, using pace and footwork near the touchline to score. Modern wings also need strong high-ball skills and reliable tackling. The fullback is the last line of defence, fielding the opposition’s kicks and covering space behind the line; they need calm hands under the high ball and a good clearing kick. In attack, fullbacks often join the backline as an extra playmaker to create overlaps.

Rugby Positions and Jersey Numbers at a Glance

The table below summarises how the 15 positions are grouped, their jersey numbers and their core jobs. You can learn more about the shirts themselves in our guide to rugby jersey numbers.

Can Players Switch Positions?

Yes. Many players move between related roles as they develop — a flanker may shift to hooker, or a centre may end up on the wing — as their size, speed or game understanding changes. Set-piece specialists and backline runners each rely on different core skills, so a player’s best position often becomes clear only after they have tried a few. If you want to see how the units combine tactically, our overview of set-piece strategies shows the forwards and backs working as one.

The takeaway is simple: rugby has a place for almost everyone. From the immovable players in the front row to the electric runners out wide, every position asks for its own mix of physical attributes, skills and decision-making — which is exactly what makes the 15-a-side game so varied.

Responsible Gambling Disclaimer

This article is an educational guide to rugby positions and is not betting or financial advice. Any reference to odds or wagering is informational only. Betting carries a real risk of financial loss, outcomes cannot be predicted, and no knowledge of positions or form changes the odds. Gambling in New Zealand is restricted to those aged 18 or over. If gambling is affecting you or someone you know, free and confidential help is available from the Gambling Helpline (0800 654 655), Safer Gambling Aotearoa and the Problem Gambling Foundation (0800 664 262).

Frequently Asked Questions (FAQ)

What is the difference between forwards and backs in rugby?

Forwards (numbers 1 to 8) are generally bigger, stronger players who win the ball at scrums, lineouts, rucks and mauls. Backs (numbers 9 to 15) are generally faster and more agile, using that ball to run, pass, kick and score tries in open space.

Why is the number 10 position so important?

The number 10, known in New Zealand as the first five-eighth or fly-half, directs the team’s tactics. They decide when to kick, pass or run, manage field position and act as the main link between the forwards and the outside backs, so they shape how the whole game is played.

What do the New Zealand terms halfback and five-eighth mean?

They are the traditional NZ names for backline positions. The halfback is the number 9 (scrum-half). The first five-eighth is the number 10 (fly-half), and the second five-eighth is the number 12 (inside centre). You will hear these terms used regularly in New Zealand rugby coverage.

Which position is best for a beginner?

There is no single answer, because rugby rewards many body types. Bigger, stronger players often start in the forwards, while quicker players suit the backs. New players are usually tried in a few roles so a coach can find where their strengths fit best.

How many players are on a rugby union team?

A rugby union team has 15 players on the field at once — eight forwards and seven backs — plus up to eight replacements on the bench, who wear numbers 16 to 23 in professional matches.