Uncle Mo was an American champion Thoroughbred racehorse who went undefeated in his two-year-old season and was named the American Champion Two-Year-Old of 2010. From Wikipedia
Fierceness, a 16-1 longshot, rebounds from recent 20-length defeat in the Champagne Stakes to win $2 million Breeders' Cup Juvenile by a large margin, sparking owner Mike Repole's consideration of skipping the Kentucky Derby to avoid previous disappointments.
