ARCADIA, Calif. - A little before 9 a.m. Tuesday, there appeared on Santa Anita's main track an essentially unremarkable bay filly of modest size wearing a plain blue saddle towel. Watching her jog from the track apron was a man in black sweater, jeans, and white sneakers who drew no special attention during the busy Breeders' Cup-week morning. But that little horse was the mighty miler Goldikova, and the elfin man was Freddie Head, the great French rider back at the Breeders' Cup for the first time as a trainer.