Qualifying match entered, reserve gets roasted again? (7)
I believe the answer is:
reheats
'roasted again?' is the definition.
'qualifying match entered reserve' is the wordplay.
'qualifying match' becomes 'heat' ().
'entered' indicates putting letters inside.
'reserve' becomes 'res' (I've seen this in other clues).
'heat' placed inside 'res' is 'REHEATS'.
'gets' acts as a link.
(Other definitions for reheats that I've seen before include "Warms again" , "leading to pops in a microwave, say" .)