Group of players from Reigate, amateurs (4)
I believe the answer is:
team
'group of players' is the definition.
(I've seen this before)
'from reigate amateurs' is the wordplay.
'from' indicates a hidden word.
'TEAM' is hidden within 'reigate amateurs'.
(Other definitions for team that I've seen before include "Company" , "Cooperating group" , "See 22" , "Side in sporting event" , "A set of players forming one side" .)