Catch a number on the rebound (3)
I believe the answer is:
net
'catch' is the definition.
(net can mean to catch)
'a number on the rebound' is the wordplay.
'a number' becomes 'ten' (ten is a number).
'on the rebound' shows that the letters should be reversed in order (to rebound is to go backwards).
'ten' in reverse letter order is 'NET'.
(Other definitions for net that I've seen before include "Trap; open-weave fabric" , "Snare or trap" , "Overall; mesh" , "It's see-through" , "Mesh; entrap" .)