Unrivalled steeplechaser gets rid of cheat and puts things right (8)
I believe the answer is:
peerless
'unrivalled' is the definition.
(synonyms)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for peerless that I've seen before include "superb" , "Unequalled" , "Without equal, nonpareil" , "Unique" , "Without equal or match" .)