Wicket defender, in cricket (7)
I believe the answer is:
batsman
'wicket defender in cricket' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for batsman that I've seen before include "He's either in or he's out!" , "Cricketer at the crease" , "Grace, for example" , "one of two on the field" , "Hitting ballplayer" .)