Baseball player in hole with pop star (7)
I believe the answer is:
pitcher
'baseball player' is the definition.
(I know that pitcher is a type of baseball player)
'hole with pop star' is the wordplay.
'hole' becomes 'pit' (a pit is a large hole).
'with' is a charade indicator (letters next to each other).
'pop star' becomes 'cher' (I have seen 'Moonstruck star' mean 'cher' so perhaps 'star' could also mean 'cher'. I am not sure about the 'pop' bit.).
'pit'+'cher'='PITCHER'
'in' is the link.
Can you help me to learn more?
(Other definitions for pitcher that I've seen before include "source of drink?" , "Baseball bowler and vessel for liquid" , "Vessel with a handle and spout" , "Baseball player; big jug" , "US sportsman" .)