Amused; second was in first place (7)
I believe the answer is:
tickled
'amused' is the definition.
(I've seen this before)
'second was in first place' is the wordplay.
'second' becomes 'tick' (both can mean a very short amount of time).
'was in first place' becomes 'led' (to lead is to be in first place).
'tick'+'led'='TICKLED'
(Other definitions for tickled that I've seen before include "Delighted" , "Pleased" , "Amused" , "to be attracted to poacher" , "Made to giggle" .)