Ridden by John Velazquez, In Lingerie bided her time along the rail on the backstretch before angling out for running room in the final furlong and powering home to a two-length victory over Mystical Star.

“She had a perfect trip,” said Velazquez, who also rode Dreaming of Julia in the Frizette. “Once I got out at the 16th pole and she was in the clear she responded right away. I’m very proud of her.”

In Lingerie ran 1 1/8 miles in 1:49.42 to become the first 3-year-old to win the Spinster — Keeneland’s premier event on the main track for fillies and mares — since Pletcher’s Panty Raid in 2007.

The $300,000 winner’s share of the $500,000 purse pushed her lifetime bankroll to $712,265 with a record of 4-2-1 in seven starts. The victory earned her an automatic spot in the Breeders’ Cup Ladies’ Classic, set for Nov. 2 at Santa Anita, but Pletcher said he might consider other options for the daughter of Empire Maker who is undefeated in three starts on a synthetic surface.

“I’d say she’s the kind you could look at a couple of different races with,” Pletcher said.

In Lingerie paid $6.80, $3.80 and $3.20. Mystical Star returned $5.60 and $4.60, and Upperline paid $5.20 to show. Aruna, last year’s winner, was sixth.

Balance the Books rallied late to win the Grade 3 $150,000 Bourbon Stakes by a nose over Really Sharp, who was disqualified to sixth for interference in the stretch.

Balance the Books paid $3.80, $2.80 and $2.40. Brown Almighty, elevated to second, returned $4.60 and $3.40, and Sonofasamurai paid $4.40 to show.

Ridden by Julien Leparoux and trained by Chad Brown, Balance the Books ran 1 1/16 miles on the turf in 1:45.15. His second victory in three career starts earned a guaranteed berth in the Breeders’ Cup Juvenile Turf at Santa Anita on Nov. 3.

“This horse is getting bigger and stronger, and it’s on to the Breeders’ Cup,” Brown said.

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