Conversation so far:
How did Zenyatta do in 2008?
On January 13, 2008, Zenyatta stopped the tele-timer in 1:40.61 and broke the stakes record in the 1-1/16-mi Grade 2 El Encino Stakes at Santa Anita
Did Zenyatta participate in any more races in 2008?
Zenyatta traveled to Oaklawn Park on April 5, 2008, for her first start on dirt and her first Grade 1 attempt.
How did Zenyatta do at Oaklawn Park?
There she defeated the 2007 Older Female champion, Ginger Punch, and won the Apple Blossom Handicap for her first Grade 1 victory
Did Zenyatta have any other victories in 2008?
Zenyatta went on to win the Grade 2 Milady Handicap and the Grade 1 Vanity Handicap at Hollywood Park
How many races did Zenyatta win in 2008?
What else did Zenyatta do in 2008?
She then set a track record of 1:41.48 for 1 1/16 miles and won the Grade 2 Clement L. Hirsch at Del Mar
How did Zenyatta do at Santa Anita Park?
On September 27, 2008, Zenyatta won the Grade 1 Lady's Secret Stakes at Santa Anita Park.

Question: Did Zenyatta win Horse of the Year for 2008?
Self-contained rewrite: Did Zenyatta win Horse of the Year for 2008?