This Day in History: 1988-11-05

Ogden Phipps’ 4-year-old filly Personal Ensign concluded her racing career with a 13-for-13 lifetime record when she edged Winning Colors by a nose to win the Breeders’ Cup Distaff at Churchill Downs. She was the first American racehorse to retire undefeated in major competition since Colin in 1908.