Secret Circle wins the inaugural running of the Sentient Breeders' Cup Juvenile Sprint.

Photo: MATHEA KELLEY

Secret Circle was ridden by Rafael Bejarano and is trained by Bob Baffert.

Photo: SKIP DICKSTEIN

Secret Circle paid $2.80, $2.40, and $2.10. Shumoos, second, returned $8.20 and $5.60, and Holdin Bullets was worth $6.20 to show.

Photo: SKIP DICKSTEIN

Secret Circle was bred in Kentucky by Willmott Stables and is out of the Dixieland Band mare Ragtime Hope.

Photo: Anne M. Eberhardt

Stephanie's Kitten wins the 2011 Breeders' Cup Juvenile Fillies Turf.

Photo: MATHEA KELLEY

Stephanie's Kitten was ridden by John Velazquez and is trained by Wayne Catalano.

Photo: SKIP DICKSTEIN

Stephanie's Kitten paid $14.20, $6.60, and $5.20. Stopshoppingmaria, second, returned $9.20 and $7.60, and Sweet Cat was worth $9.40 to show.

Photo: DAVE HARMON

Stephanie's Kitten was bred in Kentucky by Ramsey Farm and is out of the Catienus mare Unfold the Rose.

Photo: Anne M. Eberhardt

Musical Romance wins the 2011 Sentient Jet Breeders' Cup Filly and Mare Sprint.

Photo: SKIP DICKSTEIN

Musical Romance was ridden by Juan Leyva and is trained by Bill Kaplan.

Photo: RICK SAMUELS

Musical Romance paid $42.40, $15.60, and $8.60. Switch, second, returned $4.80 and $3.40, and Her Smile was worth $12.40 to show.

Photo: SKIP DICKSTEIN

Musical Romance was bred in Florida by Ocala Stud and is out of the Slew Gin Fizz mare Candlelightdinner.

Photo: SKIP DICKSTEIN

My Miss Aurelia wins the 2011 Grey Goose Breeders' Cup Juvenile Filles.

Photo: Anne M. Eberhardt

My Miss Aurelia was ridden by Corey Nakatani and is trained by Steve Asmussen.

Photo: COURTNEY BEARSE

My Miss Aurelia paid $6.20, $4.00, and $3.00. Grace Hall, second, returned $4.60 and $3.20, and Wemissfrankie was worth $3.60 to show.

Photo: SKIP DICKSTEIN

My Miss Aurelia was bred in Kentucky by Stonestreet Stables and is out of the Sea of Secrets mare My Miss Storm Cat.

Photo: SKIP DICKSTEIN

Perfect Shirl wins the 2011 Emirate Airlines Breeders' Cup Filly and Mare Turf.

Photo: Anne M. Eberhardt

Perfect Shirl was ridden by John Velazquez and is trained by Roger Attfield.

Photo: RICK SAMUELS

Perfect Shirl paid $57.60, $18.60, and $11.60. Nahrain, second, returned $5.00 and $3.80, and Misty For Me was worth $5.20 to show.

Photo: Anne M. Eberhardt

Perfect Shirl was bred in Canada by owner Charles E. Fipke and is out of the That's a Nice mare Lady Shirl.

Photo: Anne M. Eberhardt

Royal Delta wins the 2011 Breeders' Cup Ladies' Classic.

Photo: MATHEA KELLEY

Royal Delta was ridden by Jose Lezcano and is trained by Bill Mott.

Photo: Anne M. Eberhardt

Royal Delta paid $6.40, $4.00, and $3.20. It's Tricky, second, returned $5.00 and $3.80, and Pachattack was worth $6.00 to show.

Photo: SKIP DICKSTEIN

Royal Delta was bred in Kentucky by the late Prince Saud bin Khaled’s Palides Investments and is out of the A.P. Indy mare Delta Princess.

Photo: Anne M. Eberhardt

It was great first day of racing for the 2011 Breeders' Cup World Championships at Churchill Downs. More photos from these races are available at The Blood-Horse Photo Store (http://www.BloodHorse.com/Photos).

Photo: Crawford Ifland