Determined to find some tennis (3)
I believe the answer is:
set
I believe this is a double definition.
'determined' is the first definition.
(I know that determined can be written as set)
'some tennis' is the second definition.
'to find' is the link.
(Other definitions for set that I've seen before include "Scenery etc. for a drama" , "Class" , "Put down the group of games" , "Group; unchanging" , "Prescribed" .)