In the morning, include drink for top players (1,4)
I believe the answer is:
a team
'top players' is the definition.
(I've seen this in another clue)
'in the morning include drink' is the wordplay.
'in the morning' becomes 'am' (AM on a clock).
'include' indicates putting letters inside.
'drink' becomes 'tea' (tea is a drink).
'am' enclosing 'tea' is 'A-TEAM'.
'for' acts as a link.
(Other definitions for a team that I've seen before include "group of elite soldiers" , "Top advisers" , "Crack unit" , "Top group" .)