LOUISVILLE, Ky. (AP) - Zenyatta's growing popularity outside horse racing led to her odds getting hammered down to 8-5 for the $5 million Breeders' Cup Classic.

The horse with the 19-0 record was made the early favorite in a field of 12 for Saturday's 1 1/4-mile Classic, where she will try to end her career with one more win.

Churchill Downs oddsmaker Mike Battaglia originally had Zenyatta at 5-2 on the morning line.

``Then my wife showed me the latest issue of Oprah magazine with the most influential women of the year, so then I knocked her down to 2-1,'' he said. ``Then I saw `60 Minutes,' so I knocked her down to 8-5. We're all looking for something special.''

Zenyatta, who is also featured in this month's issue of fashion magazine W, will break from the No. 8 post against the boys.

``We like that number. It's one of our favorite numbers,'' said Ann Moss, who owns Zenyatta with her husband Jerry. ``It's considered to be a lucky number.''

At 6, Zenyatta is the oldest horse in the Classic, which she came from behind to win last year on Santa Anita's synthetic surface.

This time, she'll be running on dirt against an accomplished field that includes Preakness and Haskell winner Lookin At Lucky, Whitney winner Blame, and Quality Road.

Blame was installed as the 9-2 second choice and will break from post No. 5. Quality Road was third choice at 5-1 and drew the No. 1 post. Lookin At Lucky was the fourth choice at 6-1 and will start from the far outside No. 12 post.

Those three and Zenyatta are the only horses listed at single-digit odds in the Classic.

Also in the Classic is Jockey Club Gold Cup winner Haynesfield, who beat Blame in that race and is 12-1.

A trio of horses - Preakness runner-up First Dude, Fly Down and Kentucky Derby third-place finisher Paddy O'Prado - were at 15-1.

Espoir City from Japan and Musket Man, third in the 2009 Kentucky Derby, were at 20-1. Etched and Pleasant Prince are the longest shots in the field at 30-1.

``It's a tough race,'' Jerry Moss said. ``These are great horses. We think she is up to the task or else we wouldn't be here.''

Zenyatta is 5-0 this year, with one win coming on dirt in the Apple Blossom at Oaklawn Park in Arkansas. The others were on synthetic tracks in Southern California, where she is based.

A repeat victory in the Classic would likely earn Zenyatta Horse of the Year honors, which she lost to Rachel Alexandra last year. Rachel retired in September.

``It's great we get to decide these things on a neutral playing field when the whole world is watching,'' said Todd Pletcher, who will saddle Quality Road.

Zenyatta arrived in Louisville before noon on a flight from Southern California. Befitting her status as the undefeated defending champ, she was driven in a private van and escorted to the track by two cars from the sheriff's department.

The Mosses and trainer John Shirreffs arrived about the same time on a private plane.

``I think she shipped better than we did,'' Jerry Moss said. ``She just looks fantastic.''

Zenyatta promptly checked out the patch of grass outside her barn.

``The grass is a little shorter here,'' Ann Moss said.

For those looking for a Zenyatta keepsake, the first 10,000 fans attending the Breeders' Cup on Friday will receive a DVD featuring her 19 victories.

Dale Romans, a Louisville native, will try to knock off the queen with his two horses, First Dude and Paddy O'Prado.

``Everybody in horse racing has become a fan. She has an `X' factor you can't handicap,'' he said about Zenyatta. ``If I don't win, I hope she does and I think everyone feels the same way.''

Pletcher feels strongly about Quality Road, who won three of four Grade 1 starts this year - the Woodward, Metropolitan and Donn handicaps. The 4-year-old colt lost to Blame by a head in the Whitney.

``Thus far it's been impossible to beat her. We're hoping a dirt track will help us,'' he said. ``You have to get a little bit lucky and have a good trip.''

Quality Road was set to run in last year's Classic, but got scratched at the gate after acting up and delaying the start of the race.

Pletcher has another contender in the $2 million Juvenile with Uncle Mo, who is the 7-5 favorite in the 10-horse field.

The $2 million Ladies' Classic on Friday features a field of 11, led by 9-5 favorite Blind Luck. The 1 1-8-mile race will finish under the lights for the first time with a 7:30 p.m. EDT post. Other top contenders are Life At Ten and Havre de Grace.

Goldikova seeks a third consecutive victory in the $2 million Mile. The Ireland-bred mare is the 6-5 favorite. Her rivals include Gio Ponti, who was second to Zenyatta in last year's Classic.

The 14 races to be run Friday and Saturday are worth $26 million. A record total of 172 horses were entered, bettering the old mark of 163 in 2008 and up from 155 last year.