Zenyatta owners Ann & Jerry Moss and jockey Mike Smith in the winner's circle, ecstatic over their triumphant win. Ann and Jerry Moss are from Beverly Hills. This is the fifth Santa Margarita win for trainer John Shirreffs. He won with Manistique in 1999, Starrer in 2003, Tarlow in 2005 and Life Is Sweet in 2009. ©Benoit Photo

Zenyatta Entrance - Zenyatta, on her way to the track, onto win 15 continued perfection. ©Benoit Photo

Moss, Ann & Smith - A kiss on the cheek for jockey Mike Smith from Zenyatta co-owner Ann Moss. ©Benoit Photo

Still undefeated after 15 starts, the amazing Zenyatta carries Mike Smith to victory in the Grade I $250,000 Santa Margarita Invitational Stakes Sat., March 13, 2010 at Santa Anita Park, Arcadia, CA. ©Benoit Photo

Jockey Calvin Borel becomes the 61st recipient of one of racing's most coveted awards Sun., March 14, 2010 at Santa Anita Park, Arcadia, CA. The Woolf Award, presented annually by Santa Anita, honors and recognizes those riders whose careers and personal character earn esteem for the individual rider and the sport of Thoroughbred racing. Borel is the regular rider of reigning Horse of the Year Rachel Alexander and has won the Kentucky Derby twice (Mine That Bird, 2009; Street Sense, 2007). ©Benoit Photo

Jockey Calvin Borel becomes the 61st recipient of one of racing's most coveted awards Sun., March 14, 2010 at Santa Anita Park, Arcadia, CA. The Woolf Award, presented annually by Santa Anita, honors and recognizes those riders whose careers and personal character earn esteem for the individual rider and the sport of Thoroughbred racing. Borel is the regular rider of reigning Horse of the Year Rachel Alexander and has won the Kentucky Derby twice (Mine That Bird, 2009; Street Sense, 2007). ©Benoit Photo