Rachel Alexandra is officially the early favorite for Saturday's Preakness Stakes, and Calvin Borel will be riding her. There's been much drama over whether Rachel Alexandra would race after Borel's stunning win at the Kentucky Derby with the 50-1 longshot Mine That Bird. There have even been questions about whether Borel should have switched horses. But if you're still chewing on any of that, watch this race. The day before the Kentucky Derby, Borel and Rachel Alexandra won the Kentucky Oaks by 20 1/4 lengths. Saturday's race is going to be interesting.