Rugby Rules Explained: What Every Player and Fan Should Know
If you’ve ever watched a match and felt lost when the referee blew the whistle, you’re not alone. Rugby can look chaotic, but underneath the action are clear rules that keep the game fair and exciting. Below, we’ll walk through the core rules for both rugby union and rugby league, give you practical tips on how to spot fouls, and show why understanding the basics makes every game more enjoyable.
Key Differences Between Union and League
First off, rugby union and rugby league are two separate codes with distinct rule sets. Union fields 15 players per side, while league uses 13. In union, after a tackle the ball must be released and a ruck forms, allowing both teams to contest possession. League, on the other hand, introduces a "play‑the‑ball" where the tackled player gets up and rolls the ball back with their foot, giving the attacking side a set of six tackles before possession switches.
Another big difference is how scoring works. In union, a try is worth 5 points, a conversion 2, and a penalty or drop goal 3. League values a try at 4 points, a conversion 2, and both penalty goals and drop goals at 1 point. These scoring variations affect strategy, especially when teams decide whether to kick for points or keep the ball in hand.
Essential Rules Everyone Should Know
1. Forward Passes Are Illegal – The ball must travel sideways or backwards. A forward pass results in a scrum for the opposing team. If you see a teammate running ahead and the ball being tossed forward, that’s a quick turnover.
2. Off‑Sides Keep Play Fair – Players must stay behind the ball or the last foot of a ruck, maul, or scrum. Crossing the line early means the referee will call a penalty, giving the other side a chance to kick, scrum, or tap.
3. Tackling Rules Protect Players – Tackles must be below the shoulders. High tackles or dangerous tackles (like shoulder charges without using the arms) lead to penalties, yellow cards, or even red cards for serious foul play.
4. The Scrum Is a Reset – When minor infractions happen, the game restarts with a scrum. Both packs bind together and push for the ball, which is fed in by the scrum‑half. Understanding the basics of scrums helps you follow why play sometimes pauses.
5. The Lineout Brings the Ball Back In – If the ball goes out of bounds, play resumes with a lineout. Players lift teammates to catch the throw‑in. Watching the coordination here is a great way to appreciate the teamwork behind the scenes.
These five rules form the backbone of any rugby match. Once you can spot them, you’ll understand why the referee makes certain calls and how teams build their tactics around them.
For Portsmouth Rugby Club supporters, knowing the rules adds depth to every home game at the Abbey. Whether you’re cheering from the stands or playing in the junior squads, a solid grasp of these basics means you’ll enjoy the sport more and avoid common misconceptions.
Ready to watch a match with confidence? Keep an eye on the ball’s direction, watch for off‑side lines, and note how the referee signals penalties. With these tips, you’ll feel right at home in the world of rugby, whether it’s union or league.

Why does rugby have laws and not rules?
Rugby is a physical sport that is regulated by laws rather than rules. This is because the laws of rugby are designed to promote sportsmanship, safety, and fairness in the game. The laws are set by World Rugby, the governing body of international rugby, and are enforced by referees during the game. By having laws, the sport can be adapted to different levels of competition, from junior to professional. Furthermore, the laws of rugby also promote tactical development by allowing coaches and players to work within the rules to develop strategies to gain an advantage. The laws of rugby are fundamental to the sport and are essential for its continued development.
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