The 10 Basic Rules of Rugby: A Beginner’s Guide to Union and League

Rugby looks chaotic to the untrained eye – players crashing into each other, the ball flying backward, and seemingly endless stoppages. But beneath the physicality lies a beautifully structured game with clear rules that reward skill, strategy, and teamwork.

Whether you’re a parent whose child just joined a rugby club, a newcomer curious about the sport, or a coach introducing beginners to the game, understanding the basic rules is your first step to appreciating rugby’s brilliance.

This guide breaks down the 10 fundamental rules that govern both rugby union and rugby league, plus the key differences between the two codes. Let’s demystify the game.

Rugby Union vs Rugby League: What’s the Difference?

Before we dive into the rules, let’s clarify the two main codes of rugby.

Rugby Union (15-a-side): - 15 players per team - Unlimited tackles (play continues until stoppage) - Contested scrums and lineouts - More set pieces and tactical kicking - Most popular globally (Six Nations, Rugby World Cup)

Rugby League (13-a-side): - 13 players per team - Six-tackle rule (team must surrender possession after six tackles) - Uncontested scrums (just a restart mechanism) - Faster, more open play - Popular in UK, Australia, and parts of France

The good news: Most fundamental rules apply to both codes. We’ll highlight the key differences as we go.

The 10 Basic Rules Every Rugby Player Must Know

Rule 1: The Ball Must Be Passed Backward (Or Sideways)

This is rugby’s most distinctive rule – and the one that confuses newcomers most.

The rule: You can only pass the ball backward or directly sideways. Forward passes are illegal.

Why it matters: This forces teams to work together, creating space and supporting ball carriers. You can’t just chuck it forward to your fastest player.

What happens if you break it: - Rugby Union: Scrum awarded to the opposing team - Rugby League: Scrum awarded to the opposing team

Important note: You CAN kick the ball forward – only passes must go backward.

Rule 2: You Can Only Tackle the Player with the Ball

Rugby is physical, but it’s controlled physicality.

The rule: You can only tackle the player who currently has possession of the ball. Tackling a player without the ball is illegal.

What constitutes a legal tackle: - Must wrap your arms around the ball carrier - Cannot tackle above the shoulders (high tackle) - Cannot tackle below the knees from behind (dangerous) - Must release the player once they’re on the ground

What happens if you break it: - Penalty awarded to the opposing team - Serious foul play can result in yellow card (10 minutes off) or red card (sent off)

Safety first: Proper tackling technique protects both tackler and ball carrier. This is why quality training equipment matters.

Rule 3: Release the Ball When Tackled

Once you’re tackled, you can’t just hold onto the ball.

The rule: When a tackle is completed (ball carrier is held and brought to ground), the tackled player must immediately release the ball.

What happens next: - Rugby Union: A ruck forms – players from both teams compete for the ball on the ground - Rugby League: The tackled player plays the ball backward with their foot; play restarts immediately

Key difference between codes: This is where union and league diverge most significantly. Union creates contested breakdowns; league keeps play flowing with quick restarts.

Rule 4: Stay Onside or Face a Penalty

Offside rules keep the game fair and flowing.

The basic principle: You must be behind the ball (or behind the last player in your team who touched it) to participate in play.

Common offside scenarios:

In general play: - If a teammate in front of you kicks the ball, you’re offside until they run past you or you retreat behind them

At breakdowns (rugby union): - You must enter from your own side (behind the hindmost foot of your team) - Cannot enter from the side or in front

After a tackle (rugby league): - Defending team must retreat 10 metres before engaging

What happens if you break it: - Penalty awarded to the opposing team - Repeated offside offenses can result in yellow cards

Rule 5: Score by Grounding the Ball in the In-Goal Area

Scoring in rugby requires more than just crossing a line.

The rule: To score a try (rugby’s primary scoring method), you must ground the ball with downward pressure in the opponent’s in-goal area.

What counts as grounding: - Placing the ball on the ground with hand or arm pressure - Falling on the ball in the in-goal area - The ball touching the ground and your body simultaneously

What doesn’t count: - Just carrying the ball across the line (must touch it down) - Dropping the ball in the in-goal (knock-on) - Being tackled before grounding

Scoring values: - Try: 5 points (union) or 4 points (league) - Conversion kick: 2 points (both codes) - Penalty kick: 3 points (both codes) - Drop goal: 3 points (union) or 1 point (league)

Rule 6: Play Restarts with Kicks, Scrums, or Lineouts

When play stops, it must restart in specific ways.

Kick-offs and restarts: - Game starts and restarts after scores with a kick-off from the halfway line - Ball must travel at least 10 metres forward

Scrums: - Awarded for minor infringements (knock-ons, forward passes) - Union: Contested – eight forwards from each team push against each other - League: Uncontested – just a way to restart play

Lineouts (rugby union only): - When the ball goes into touch (out of bounds), play restarts with a lineout - Teams form parallel lines; ball is thrown in between them - Players jump to catch or tap the ball

Play-the-ball (rugby league only): - After a tackle, the ball carrier stands, places the ball on the ground, and rolls it backward with their foot - Play restarts immediately

Rule 7: You Cannot Knock the Ball Forward

Dropping or fumbling the ball forward is illegal.

The rule: If the ball travels forward off your hands or arms and hits the ground or another player, it’s a knock-on.

What happens: - Both codes: Scrum awarded to the opposing team

Important exceptions: - If you knock the ball forward but catch it yourself before it touches the ground or another player, play continues - Deflections off other body parts (chest, legs) aren’t knock-ons

Why it matters: This rule rewards ball-handling skill and punishes carelessness.

Rule 8: The Six-Tackle Rule (Rugby League Only)

This is rugby league’s defining characteristic.

The rule: The attacking team has six tackles to score or gain territory. After the sixth tackle, possession transfers to the opposing team.

Strategic implications: - Teams typically kick on the fifth or sixth tackle to gain territory - Creates a faster, more structured game than union - Forces teams to make progress or surrender possession

Rugby union equivalent: There’s no tackle limit in union – play continues until a stoppage (knock-on, penalty, ball goes out, or score).

Rule 9: Respect the Referee’s Authority

Rugby has a unique culture of respect for officials.

The rule: Only the team captain can speak to the referee about decisions. Players must immediately comply with referee instructions.

What makes rugby different: - Arguing with the referee results in penalties advancing 10 metres - Dissent can lead to yellow or red cards - Players call the referee “sir” or “ma’am”

Why it matters: This culture of respect keeps the game flowing and maintains rugby’s values of sportsmanship.

Rule 10: Advantage Allows Play to Continue

Referees don’t blow the whistle for every infringement.

The rule: If a team commits an offense but the opposing team gains an advantage, the referee allows play to continue rather than stopping for a penalty.

How it works: - Referee signals advantage with an outstretched arm - If the advantaged team benefits (gains territory, scores, etc.), play continues - If no advantage materializes, referee brings play back for the original penalty

Why it’s brilliant: Keeps the game flowing and rewards teams who play through opposition mistakes.

Key Differences Between Rugby Union and Rugby League

Beyond the 10 basic rules, here are the major distinctions:

Feature	Rugby Union	Rugby League
Players per team	15	13
Tackle limit	Unlimited	Six tackles
Scrums	Contested (8 forwards)	Uncontested (6 forwards)
Lineouts	Yes (when ball goes out)	No (penalty or scrum instead)
Play after tackle	Ruck forms (contested)	Play-the-ball (uncontested)
Substitutions	7 tactical subs	10 interchange players
Game duration	80 minutes (2 x 40min halves)	80 minutes (2 x 40min halves)
Try value	5 points	4 points
Drop goal value	3 points	1 point

Common Rugby Penalties and Infringements

Understanding what stops play helps you follow the game:

Minor infringements (scrum awarded): - Knock-on (ball knocked forward) - Forward pass - Accidental offside

Penalties (kick awarded): - Deliberate offside - Not releasing the ball when tackled - Not releasing the tackled player - Entering ruck/breakdown from the side - High tackle or dangerous play - Holding onto a player without the ball

Yellow card offenses (10 minutes off): - Repeated team infringements - Cynical play (deliberately stopping a scoring opportunity) - Dangerous tackles

Red card offenses (sent off permanently): - Serious foul play - High-impact dangerous tackles - Striking or violent conduct

How to Start Playing Rugby: From Rules to Reality

Understanding the rules is step one. Applying them on the pitch requires practice, coaching, and the right equipment.

For beginners: - Start with tag or touch rugby to learn passing and positioning without contact - Progress to controlled contact training with proper technique - Focus on the fundamentals: passing backward, staying onside, supporting teammates

For coaches introducing rugby: - Teach one rule at a time through small-sided games - Use quality training equipment that develops proper technique safely - Emphasize the values: respect, discipline, teamwork

For parents: - Rugby teaches incredible life skills: resilience, teamwork, respect - Proper coaching and equipment make it safe - The rules create structure that protects players

Training Equipment That Teaches the Rules

Learning rugby rules isn’t just about reading them – it’s about practicing them safely and effectively.

At Centurion Rugby, we supply training equipment designed to develop proper technique while teaching the game’s fundamentals:

·         Tackle shields and pads – teach legal tackling technique (Rule 2) safely

·         Passing aids – develop backward passing skills (Rule 1) under pressure

·         Agility equipment – improve positioning and staying onside (Rule 4)

·         Contact training gear – build confidence in physical aspects of the game

Our Icarus Tackle Shield is particularly effective for beginners. The innovative design with green-coloured arm ends teaches players to run into space rather than straight into contact – a fundamental rugby skill that applies across all rules.

When you combine clear rule understanding with quality training equipment, players develop faster and safer.

Your Rugby Rules Quick Reference

Can you pass the ball forward? No – only backward or sideways
Can you kick the ball forward? Yes – kicking forward is legal
Can you tackle any player? No – only the player with the ball
What happens when you’re tackled? You must release the ball immediately
How do you score? Ground the ball in the opponent’s in-goal area
What’s offside? Being ahead of the ball when you shouldn’t be
What’s a knock-on? Dropping or fumbling the ball forward
Can you argue with the referee? No – only the captain can speak to the ref
What’s the six-tackle rule? Rugby league only – six tackles then possession changes
What’s advantage? Referee lets play continue if the non-offending team benefits

From Rules to Rugby: Get Started with Quality Equipment

Understanding rugby’s rules opens the door to one of the world’s greatest sports – a game that builds character, fitness, and lifelong friendships.

At Centurion Rugby, we’ve spent over 30 years helping clubs, schools, and players across the UK learn and love rugby. Our training equipment is designed for the realities of teaching the game: developing proper technique, building confidence, and keeping players safe.

Whether you’re starting a youth program, coaching beginners, or equipping a school team, we supply the gear that helps players master the fundamentals and fall in love with rugby.

Ready to get started? Browse our complete range of rugby training equipment at Centurion Rugby and give your players the foundation they need to succeed.