Baseballer in the jug? (7)
I believe the answer is:
pitcher
'the jug?' is the definition.
(I've seen this before)
I can't explain the remainder of the clue.
Can you help me to learn more?
(Other definitions for pitcher that I've seen before include "Baseball bowler and container for liquid" , "Earthenware vessel" , "Does one throw the vessel?" , "Large jug; thrower" , "source of drink?" .)