Poem about senior member who participates in cricket? (7)
I believe the answer is:
fielder
'who participates in cricket?' is the definition.
'poem about senior member' is the wordplay.
'poem' becomes 'if' (I've seen this in other clues).
'about' is a reversal indicator.
'senior member' becomes 'elder'.
'if' in reverse letter order is 'fi'.
'fi'+'elder'='FIELDER'
(Other definitions for fielder that I've seen before include "Slip or cover, maybe" , "he might be in a silly position" , "Slip, perhaps" , "Cricketer not on batting side" , "cover, perhaps" .)