Calvin Borel rides Super Saver to victory during the 136th Kentucky Derby on Saturday at Churchill Downs in Louisville, Ky. Borel has been the winning jockey in three of the last four Kentucky Derbys, winning with Mine that Bird last year. Story on page 6C.

Louisville, Ky. ? The starting gate sprung open in the Kentucky Derby, with 19 horses scrambling for position. One jockey knew exactly where he was headed.

Calvin Borel deftly tucked Super Saver along the rail Saturday on a track turned into creamy peanut butter by heavy rain. Once again, he was in his favorite spot, getting a clear path all the way through the goo.

That’s why they call him “Bo-rail” and, for the third time in four years, he took the shortest path to the winner’s circle.

Borel found only one horse in his way, and once he steered Super Saver around front-running Conveyance, another Run for the Roses was his.

The most wide-open Derby in years ended with a sure thing — Borel crossing the finish line and punching the air with this right fist, this time raising it toward a leaden sky.

Super Saver trainer Todd Pletcher, left, and jockey Calvin Borel hold up the trophy after winning the 136th Kentucky Derby on Saturday at Churchill Downs in Louisville, Ky.

“I knew nothing was going to run him down,” he said, referring to his bay colt.

The jockey’s magic touch on his home track gave trainer Todd Pletcher his first Derby victory after 24 failures with a 2 1?2-length victory over Ice Box.

“Calvin Borel is a great rider anywhere he goes, but at Churchill Downs he’s even five lengths better,” Pletcher said. “He knows how to ride this track and gets along with his colt beautifully.”

Borel’s ride at his home track nearly duplicated the one he turned in last year aboard 50-1 shot Mine That Bird, except he and Super Saver went off at lower odds and were never in last place.

Now the trio heads to Baltimore for the Preakness on May 15.

“Calvin already said he’s going to win the Triple Crown,” Pletcher said, “so I guess we’d better go there.”

The Triple Crown was last won 32 years ago by Affirmed. The last Derby winner to break from Super Saver’s No. 4 post was 1977 Triple Crown winner Seattle Slew.

Borel almost pulled off his own personal triple last year. Mine That Bird won the Derby, then Borel switched to filly Rachel Alexandra to win the Preakness before going back to Mine That Bird in the Belmont Stakes. They finished third as the 6-5 favorite.

On Saturday, he was confident enough in his colt and his knowledge of the track to take him off the lead in the early going of the 1 1?4-mile race. In all but one of his six previous races, Super Saver had never been farther back than second in the early stages.

Borel knew that strategy wouldn’t work in a 20-horse Derby field on a tiring, sloppy track that had been pelted by heavy rain early in the day. So they hugged the rail in sixth place, while many of his rivals were well off the fence in the muck.

“We all know what he’s going to do,” said Robby Albarado, who finished 14th aboard Dean’s Kitten. “He just does it anyway.”

Said Borel: “I was just taught it’s the shortest way around.”

Super Saver was timed in 2:04.45 as the 8-1 second-choice behind favorite Lookin At Lucky, whose 6-1 odds tied Harlan’s Holiday in 2002 for the longest priced favorite in 136 runnings. He paid $18, $8.80 and $6.

Pletcher let out a whoop and slapped his hands together after his colt crossed the finish line, snapping a skid the Eclipse Award-winning trainer was eager to end. He watched the race alone on TV in the horseman’s lounge near the paddock.