Team starts to collapse, relinquishing every wicket (4)
I believe the answer is:
crew
'team' is the definition.
(crew is a kind of team)
'starts to collapse relinquishing every wicket' is the wordplay.
'starts to' suggests taking the first letters.
The initial letters of 'collapse relinquishing every wicket' is 'CREW'.
(Other definitions for crew that I've seen before include "Ship's operators" , "Squad" , "They operate ships or aircraft, say" , "Gave wake-up call" , "Ship's men" .)