Trainer John Shirreffs says Zenyatta, perfect in 15 races heading toward her next likely start in the Apple Blossom Handicap April 9, has "evolved into something much bigger than we ever imagined."

"That’s what I tell people," Shirreffs said of the undefeated 6-year-old mare who gave the trainer his fifth Santa Margarita Invitational Handicap victory March 13 with a scintillating last-to-first burst for her 15th straight win. The daughter of Street Cry breezed six furlongs under regular rider Mike Smith at Hollywood Park March 25 in 1:14.60 for Oaklawn Park’s Apple Blossom.

Zenyatta, by Mathea Kelley
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