After conferring with owners Jerry and Ann Moss, a decision has been made to run the champion mare Zenyatta in 2010 rather than breed her, trainer John Shirreffs said Jan. 16.

The undefeated Zenyatta, a finalist for 2009 Horse of the Year, had been working weekly at her Hollywood Park base since becoming the first female to win the Breeders' Cup Classic in electrifying style Nov. 7. She has posted three half-mile workouts at Hollywood recently.

"She's just been training so well since the Breeders' Cup. You know Mr. Moss is such a great sportsman and he really wanted to see her run again," an overjoyed Shirreffs said while confirming Zenyatta's un-retirement, first reported by Daily Racing Form.

Of a possible meeting with the other 2009 Horse of the Year finalist, Rachel Alexandra, Shirreffs responded, "Obviously, that's something everyone would like to see