John Shirreffs & Zenyatta | 60 Minutes Archive

60 Minutes rewind. Next Saturday, she could become the first great American athlete to retire undefeated in more than half a century since Rocky Marciano stepped down from the ring. Her name is Anatam.She's six years old and she's a thoroughbred. She has run in 19 races. She has won 19 races.Now she's going for number 20 at what many believe is the most prestigious competition of the year, the Breeders Cup Classic. Some of the best horses from around the world will be running at Churchill Downs and they're ...