AP Racing Writer

LOUISVILLE, Ky. - Big Brown's all in and so is the filly Eight Belles, a perfect combination for an intriguing 134th Kentucky Derby.

Unbeaten in three career starts, Florida Derby winner Big Brown was stamped the 3-1 favorite for Saturday's 1 1/4-mile Derby after drawing the far outside No. 20 post position. Eight Belles, taking on the boys for the first time, drew the No. 5 post and was 20-1 on the morning line set by Churchill Downs oddsmaker Mike Battaglia.

"I feel that if we run our race, and he breaks clean, I don't see a horse as of yet that can beat Big Brown," trainer Rick Dutrow Jr. said Wednesday. "I just don't see it. I don't want to see it, either."

The only Derby winner to leave from the No. 20 post was Clyde Van Dusen in 1929.

"We prefer just to break on the outside," Dutrow said. "We get assured of a clean trip. If he breaks good, we figure it's to our advantage. We had a few choices and felt we took the best shot."