 In 2013, Ritvo ran Mucho Macho Man in assorted races in the eastern U.S., then moved him to Santa Anita Park in early September, almost two months before the Breeders'Cup races, because she felt he "thrived" in California. She entered him in the late September Awesome Again Stakes, where he earned his first Grade I win and free entry fees for the Breeders' Cup Classic. At the Classic in early November, going off as the second favorite, the horse won by a nose. With the win, Ritvo became the first woman trainer to win the Breeders'Cup Classic, and was also only the fifth woman trainer to win any Breeders' Cup race. Ritvo's fellow trainers in the race included Americans D. Wayne Lukas, Todd Pletcher, Bill Mott, and Bob Baffert, as well as Irish trainer Aidan O'Brien. In response to a reporter's question about how it felt to beat several major trainers, she said, "It feels great," but also credited the team behind the horse, and added, " I ’ m just blessed to be here. ”
