Equal to striker (5)
I believe the answer is:
match
This clue is a double definition.
'equal' is the first definition.
('match' can be a synonym of 'equal')
'striker' is the second definition.
(a match can be struck)
'to' acts as a link.
(Other definitions for match that I've seen before include "Game; lighter" , "Equivalent" , "An exact duplicate or a contest between two" , "of little use when floodlights fail?" , "Contest; correspond" .)