Amazombie rallied to win the $1.5 million Sprint by a neck at 7-1 odds, extending the string of upsets on the second day of the Breeders' Cup.
Ridden by Hall of Fame jockey Mike Smith, Amazombie ran six furlongs in 1 minute, 9.17 seconds Saturday at Churchill Downs and paid $17.80 to win.
It was Smith's 14th Breeders' Cup victory, leaving him one behind the record of 15 by retired jockey Jerry Bailey, and the first for trainer Bill Spawr, who co-owns the 5-year-old gelding.
Force Freeze was second, and Jackson Bend was another 2-1/4 lengths back in third.
Classic
Drosselmeyer, a 14-1 long shot, roared down the middle of the track and caught Game On Dude in the closing strides. Hall of Fame jockey Mike Smith beat his former fiance, Chantal Sutherland, who was aboard Game On Dude.
Mile
Court Vision pulled off a 64-1 upset as three-time champion Goldikova finished third in her final race. Court Vision paid $131.60, the second highest payoff in the world championships.
Juvenile
Hansen upset even-money favorite Union Rags by a head. Ridden by Ramon Dominguez, Hansen ran 1-1/16 miles in 1:44.44 and paid $16.20.
Turf
Joseph O'Brien, 18, became the youngest jockey to win a Breeders' Cup race when he guided St Nicholas Abbey to victory. He was riding for his father, trainer Aidan O'Brien. St Nicholas Abbey ran 1-1/2 miles in 2:28.95 and paid $15.60 to win.
Dirt Mile
Caleb's Posse came charging down the stretch to overtake pacesetter Shackleford and win the Dirt Mile by four lengths. Ridden by Rajiv Maragh, Caleb's Posse ran one mile in 1:34.59 at 6-1 odds.
Turf Sprint
Regally Ready won with a strong inside move, the first winning favorite of the day at 2-1. Regally Ready carried Corey Nakatani to his ninth Breeders' Cup victory.
Juvenile Turf
Wrote rallied in the deep stretch to beat Excaper by 2-1/4 lengths, with Farraaj third, completing a sweep by foreign horses.
Marathon
Afleet Again came from well off the pace to win by 2-1/4 lengths at 41-1 odds. Ridden by Cornelio Velasquez, Afleet Again ran 1-3/4 miles in 3:00.39 and paid $85.20 to win.
