Just before super-filly Rachel Alexandra tries to spoil Kentucky Derby longshot winner Mine That Bird's attempt to win the second leg of the Triple Crown, don't miss Headley Brittania gallop to the top of the Rolex Kentucky CCI**** with a history-making performance.

This fantastic little horse took on the boys and won, becoming the first mare to claim the honors in the history of the event. For Australian rider Lucinda Fredericks, Little Brit blazed around the Kentucky Horse Park and added to her sparkling resume with the win.

Presented by Canon, the Rolex Kentucky Three-Day Event telecast will air Saturday, May 16 at 3:30 p.m. EST on NBC.

Don't miss the best eventing horses and riders in the world tackle one of the toughest courses and vie for a Rolex watch and more than $250,000 in prize money.

Then watch another battle of the sexes at Pimlico with the 134th running of the Preakness.

Rolex Kentucky Three-Day Event
Saturday, May 16, 2009
3:30-4:30 p.m. ET
On NBC