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NEW YORK (AP) – Justify led all the way to win the Belmont Stakes by 1¾ lengths and become horse racing’s 13th Triple Crown champion and second in four years.

The chestnut colt is the second undefeated colt to sweep the Kentucky Derby, Preakness and Belmont, improving to 6-0 in a racing career that began on Feb. 18. Seattle Slew was unbeaten when he won the Triple Crown in 1977.

justify belmont stakes triple crown Justify Becomes 13th Triple Crown Champion With Belmont Stakes Victory

ELMONT, NY – JUNE 09: Justify #1, ridden by jockey Mike Smith leads the field to the finish line to win the 150th running of the Belmont Stakes at Belmont Park on June 9, 2018 in Elmont, New York. Justify becomes the thirteenth Triple Crown winner and the first since American Pharoah in 2015. (Photo by Michael Reaves/Getty Images)

Sent off as the 4-5 favorite, Justify went to the lead out of the starting gate and led nine rivals around the track’s sweeping turns on Saturday. He’s the first Triple Crown winner to face that many rivals in the 1½-mile Belmont.

Bob Baffert became the second trainer to win the Triple Crown twice. He did so with American Pharoah in 2015, ending a 37-year drought.

At 52, Mike Smith is the oldest jockey to win the Triple Crown.

(Copyright 2018 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)

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