Crossword Genius

Horse racer (13)

Ross

I believe the answer is:

steeplechaser

(Other definitions for steeplechaser that I've seen before include "Racehorse - athlete" , "Horse that jumps" , "Type of racehorse" , "Racehorse; 13" , "who's pursuing high position in church?" .)

I've seen this clue in The Times.
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