Run away from flipping shot put's finale (4)
I believe the answer is:
bolt
'run away from' is the definition.
(thesaurus)
'flipping shot put's finale' is the wordplay.
'flipping' is a reversal indicator.
'shot' becomes 'lob' (type of shot in eg tennis).
'finale' says to take the final letters.
The final letter of 'put' is 't'.
'lob' reversed gives 'bol'.
'bol'+'t'='BOLT'
(Other definitions for bolt that I've seen before include "Fastener; suddenly run away" , "Escape" , "From the blue, it's a great surprise" , "Crossbow missile" , "From the blue, it's a big surprise" .)