(CNN) -- Sir Winston, ridden by Joel Rosario, finished first Saturday at the Belmont Stakes, the third contest in US horse racing's Triple Crown.
Kentucky Derby winner Country House was not in the race.
Preakness Stakes winner War of Will was not a factor.
It was the 151st running of the 1 1/2-mile race at Belmont Park in Elmont, New York.
Developing story -- More to come
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