Guess the sport !

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Across
  1. 3. a score of five or seven points
  2. 4. a proctective, plastic object that you put on your head
  3. 6. the person who is in the back of the scrum
  4. 8. to stop an opposant from running away
  5. 10. to go fast to escape opposants
  6. 11. a 100x70 metters rectangular grass concrete surface where the game is played
  7. 13. the break of ten minutes in the middle of the match
  8. 14. to hit the ball with your foot to score while running
Down
  1. 1. a protective, plastic object that you put on your teeth
  2. 2. a player who link the forward and the back
  3. 5. to hit the ball with your foot
  4. 7. the person who checks that the rules are respected
  5. 9. a sport t-shirt part of the uniform
  6. 10. a card that you give when players violate the rules
  7. 12. an oval, leather object