American Pharoah began his 2015 campaign with wins in the Rebel Stakes and Arkansas Derby and went on to win the 2015 Kentucky Derby and 2015 Preakness Stakes. He won the Triple Crown in a wire-to-wire victory at the 2015 Belmont Stakes, becoming the first American Triple Crown winner since Affirmed in 1978 and the 12th in history. His winning time was the second-fastest for a Triple Crown winner, and his closing quarter-mile time of 24.32 was faster than Secretariat's. He next shipped to Monmouth Park and easily won the Haskell Invitational on August 2, prompting Baffert to say, ''He just keeps bringing it; he's a great horse.'' Three weeks later, he finished a close second in a hard-fought Travers Stakes at Saratoga Race Course on August 29, 2015, snapping a winning streak of eight races. After a layoff of two months, he shipped to Keeneland for the 2015 Breeders' Cup and ran in the Breeders' Cup Classic, where he challenged older horses for the first time and won by 6 lengths, breaking the track record. Pursuant to the agreement between Zayat and Ashford, American Pharoah was retired to stud at the conclusion of his 2015 racing year.
Answer this question, making sure that the answer is supposed by the text: did american pharoah race after he won the triple crown?
yes