>>The 4th official keeps track of injury time
They do a horrible job of it. Last WC I used a stop watch to track how often the ball was in play (yes I know, not the same as injury time). It was only 68 minutes for a 90 minute match (+2 injury time).
Try it during a match sometime. You'll be surprised how little they actually play in a 90 minute match.
Italy
1. Gianluigi Buffon, 3. Fabio Grosso, 5. Fabio Cannavaro, 6. Andrea Barzagli, 8. Ivan Gennaro Gattuso, 9. Luca Toni, 10. Francesco Totti, 16. Mauro Camoranesi, 19. Gianluca Zambrotta, 20. Simone Perrotta, 21. Andrea Pirlo
Ukraine
1. Oleksandr Shovkovski, 2. Andriy Nesmachnyi, 4. Anatoliy Tymoshyuk, 6. Andriy Rusol, 7. Andriy Shevchenko, 8. Oleg Shelayev, 9. Oleg Gusiev, 14. Andriy Gusin, 15. Artem Milevskyy, 19. Maksim Kalinichenko, 22. Vyacheslav Sviderskyy
It's still probably more than in an NFL game.
If you assume 120 plays in a football game with each play averaging around 10 seconds, that's about 20 minutes of actual play out of 60.