Uninspiring side, second to finish (4)
I believe the answer is:
tame
'uninspiring' is the definition.
I don't understand the remainder of the clue.
Can you help me to learn more?
(Other definitions for tame that I've seen before include "Restrained" , "quiet" , "Flat" , "'Domesticated, docile (4)'" , "far from spicy" .)