Why Horse Racing's Top Prize Is So Elusive

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Tomorrow — for the second year in a row — it’s possible that a horse could win the last race in the Triple Crown — for the first time since 1978. American Pharoah won the Kentucky Derby five weeks ago.  Two weeks later, he took the Preakness.  Tomorrow, he’s run in the Belmont Stakes — with a chance of a Triple Crown winner for the first time in 37 years.  What are his chances?  

American Pharoah after winning the 2015 Preakness (Maryland GovPics)