Name Tranquility Farm's new retiree and win a 2010 In the Presence of Champions calendar!

Here is a puzzler for our readers! A new retiree is en route to Tranquility Farm. This superstar of California racing placed sixth in the Kentucky Derby, and out of twenty-one starts he had six wins that included the Golden Bear Stakes at Golden Gate Fields; the Gr.1 Santa Anita Derby; the Gr.2 San Felipe Stakes; and the Grade 3 Baldwin Stakes. He earned in excess of $800,000, and after his retirement he served for a while as a stable pony in Jeff Mullins barn. Can you name this famous horse?