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Across 1. This is part of their job, checking boots etc 4. Assistant to the referee 6. The name of the main official in Tennis 8. What do they look like 10. Score a boxing match 11. Who do you have in your sport

Down 2. These might watch the clock 3. This is needed between the different officials 5. Might tell you who has won and by how many 7. They call if a tennis ball is out 9. Has the authority to make decisions during the game