Some men in England forming baseball team? (4)
I believe the answer is:
nine
'baseball team?' is the definition.
('nine' can be a synonym of 'baseball team')
'some men in england' is the wordplay.
'some' indicates the answer is hidden within the clue (some of the parts of the word are used).
'NINE' can be found hidden inside 'men in england'.
'forming' is the link.
(Other definitions for nine that I've seen before include "One's married partner" , "Three squared" , "One more than fourteen across" , "Number of feline existences" , "So many" .)