Calvin Borel rides Street Sense to victory in the 133rd Kentucky Derby at Churchill Downs in Louisville, Ky. AMY SANCETTA | Associated Press   Calvin Borel rides Street Sense, right, past Mario Pino rides Hard Spun to win the 133rd Kentucky Derby at Churchill Downs in Louisville, Ky. AL BEHRMAN | Associated Press

The colt broke two Derby jinxes to score the win under jockey Calvin Borel, who was 0-for-4 in the race.

In beating Hard Spun by 2 1-2 lengths, Street Sense became the first Breeders' Cup Juvenile winner to return in the spring and win on the first Saturday in May, snapping an 0-for-23 skid. He was also the first 2-year-old champion to win the Derby since Spectacular Bid in 1979.

While it was Nafzger's second win in three tries, trainer Todd Pletcher, who had a record-tying five horses, was skunked again. He is now 0-for-19 in the Derby.

The 65-year-old Nafzger, who is nearly retired from training, wasn't as emotional as he was in 1990, when Unbridled won for 92-year-old Frances Genter. Because of her failing eyesight, Nafzger called the race in her ear so she could follow her colt to the finish line.

This time, Nafzger merely wrapped his arm around 83-year-old owner James Tafel, then shook hands before pumping his left fist.

"I can't believe it, I can't believe it. This is the toughest race in the world to win," the trainer said.

Street Sense was sent off as the 9-2 favorite on his hometown track.

Curlin finished third, losing for the first time in his four-race career.