Exceptional talent shown by Bill in race abroad (10)
I believe the answer is:
brilliance
'exceptional talent' is the definition.
'brilliance' can be an answer for 'talent' (thesaurus). I am not certain of the 'exceptional' bit.
'bill in race abroad' is the wordplay.
'abroad' indicates anagramming the letters.
'bill'+'in'+'race'='billinrace'
'billinrace' with letters rearranged gives 'BRILLIANCE'.
'shown by' acts as a link.
Can you help me to learn more?
(Other definitions for brilliance that I've seen before include "Genius; brightness" , "Exceptional cleverness" , "Brightness; cleverness" , "Brightness, vividness" , "virtuosity" .)