Quits supporting the Spanish teams (7)
I believe the answer is:
elevens
'teams' is the definition.
(eleven is a kind of team)
'quits supporting the spanish' is the wordplay.
'quits' becomes 'evens' (I've seen this before).
'supporting' means one lot of letters go next to another (in a down clue, some letters go below others).
'the spanish' becomes 'el' ('the' in Spanish).
'evens' after 'el' is 'ELEVENS'.
(Other definitions for elevens that I've seen before include "Eg, football teams" , "Some sportsmen" , "Particular numbers" , "Sports teams" , "1A, 20 [SUNDERLAND LEEDS]" .)