Possible Clues:

• 11-Across' sport
• It would be wrong to get the net up for this (6)
• Group outside tavern turned up for a game
• Racquet-game
• Court proceedings?
• Ball-game
• After tea one gets to the court in Clare
• Racketeer's pastime?
• It has its advantages
• How one might serve up at the hotel in the set