the 1–10 favorite in a 5- horse field, Rachel Alexandra won the mile $214,000 Grade 2 Fleur de Lis Handicap in its 36th running at Churchill Downs. Carrying the top weight of 124 pounds, giving 7–11 pounds to the rest of the field, she put away her rivals at the head of the stretch to win by 10 ½ lengths. Her finishing time of 1:48.78 was a fraction faster than her Kentucky Oaks victory. She was assigned a Beyer Speed Figure of 109, the highest for any filly or mare thus far that year. Rachel Alexandra's fourth start in 2010 was Monmouth Park's July 24 Lady's Secret Stakes at a mile and an eighth. The officials at Monmouth Park bumped the purse of the ungraded race from $150,000 to $400,000, contingent upon her starting in the race. The Monmouth race is not to be confused with the Oak Tree/Santa Anita race of the same name. Rachel Alexandra won the Lady's Secret by three lengths. On 29 August 2010, Rachel Alexandra under Calvin Borel finished second by a length to Persistently at the in the $300,000 Personal Ensign Stakes at Saratoga Race Course, a potential prep for the Breeders' Cup Classic. In that race, Rachel Alexandra and champion mare Life at Ten hooked up in a moderate pace. Rachel outlasted Life at Ten but could not hold off Persistently, who passed her 1/16th of a mile before the finish. Calvin Borel, rider aboard Rachel Alexandra, offered no excuses after the GI Personal Ensign "I had everything my way, and she just got outrun," said Borel. "After we put away Life At Ten at the quarter pole, I didn't feel any acceleration and I got worried. She wasn't really there. I knew if anyone was running behind us, we were in trouble." Breeding career On September 28, 2010, Rachel Alexandra was retired from racing and became a broodmare for the 2011 breeding season. Jess's Dream Rachel Alexandra's first mating was with Curlin (2007 and 2008 American Horse of the Year) on the 22nd of February – who also raced for owner Jess Stonestreet Jackson Jr. This cross put Rachel Alexandra on a short list of Thoroughbred broodmares who have won the Eclipse Award for Horse of the Year and produced foals by stallions who were also Horse of the Year, the others being Azeri (A.P. Indy and Ghostzapper), Lady's Secret (Seattle Slew