Fair play to jockey employed overseas (13)
I believe the answer is:
sportsmanship
'fair play' is the definition.
(thesaurus)
I don't understand the rest of the clue.
Can you help me to learn more?
(Other definitions for sportsmanship that I've seen before include "Playing the game" , "Sense of fair play" , "Equity" , "Playing fair, being a good loser, etc" .)