Who Am I ???

*I began my career racing exclusively on one coast and finished it running only on the other coast. *My prowess earned me multiple Eclipse Awards and entry into American Racing‘s Hall of Fame. *I finished 1st or 2nd in all but two of my races, and in both of those races I had good excuses. *In one of my stakes wins, I set a track record at Churchill Downs. *I was undefeated on the grass, but the majority of my racing was done on the dirt. *You could say that I was a shoo-in to win all of my races in my final year of racing. *In my finest season, I won races shorter than 6 furlongs and at distances up to 1 ¼ miles and won races on both dirt and turf. *I was a stakes winner in three out of my four seasons of racing. *As a three-year-old, I was not a champion although I did split decisions with that year’s champion. *I won my final seven races, all of which were stakes races. *If you can deduce the first half of my name, the second half should become much easier. You should know by now … Who Am I ???