1. Number of Players
- 15s: 15 players per team.
- 7s: 7 players per team.
2. Match Duration
- 15s: Two 40 minute halves.
- 7s: Two 7-minute halves (typically). With 10-minute halves in the final.
3. Half Time
- 15s: 10 minute half time.
- 7s: Two 7-minute halves (typically). With 10-minute halves in the final.
4. Scrums
- 15s: 8 player scrums.
- 7s: 3 player scrums.
5. Conversions
- 15s: Place kicks or drop kicks.
- 7s: Drop kicks only.
6. Conversion Time
- 7s: Conversions must be taken within 30 seconds of scoring a try.
7. Kick Offs
- 15s: The conceding team kicks off.
- 7s: The scoring team kicks off.
8. Yellow Cards
- 15s: 10 minute suspension.
- 7s: 2 minute suspension.
9. Substitutions
- 15s: Up to 8 and rules for front row replacements.
- 7s: Restrictions on the number of substitutions to 5.
10. Referee Advantage Rulings
- 7s: Referees tend to make advantage rulings much quicker than in the 15s.
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