This week at Golden Gate Fields Schedule: Friday through Sunday Post time: 12:45 p.m. Feature race: $100,000 California Derby on Saturday Update: Calumet Farms’ Choo Choo, trained by Jerry Hollendorfer, is the 2-1 morning-line favorite in a field of eight 3-year-olds for the California Derby. Choo Choo won one of five starts in Southern California and finished third in the Eddie Logan Stakes and fourth in the Grade 3 Cecil B.