Forward, one out (7)
I believe the answer is:
striker
I believe this is a double definition.
'forward' is the first definition.
(forward can mean a football striker)
'one out' is the second definition.
(I've seen this before)
(Other definitions for striker that I've seen before include "Goalscorer" , "disaffected employee" , "One refusing to work - rings the bell" , "Football attacker" , "One walking a picket-line" .)