Related Clues:

• Tries to hit someone?
• Flying mammals
• Looks at curves?
• Ball clubs
• Swings for the fences
• Is up, in a way
• Off one's trolley
• Some baseball gear
• Nutty as a fruitcake
• Loco
• They fly by night
• Cricket equipment
• Cave hangers
• Night fliers
• Some Cooperstown displays