Big Brown will break from the No. 1 post in Saturday's Belmont Stakes as he tries to become the first Triple Crown winner in 30 years.

Big Brown, the Kentucky Derby and Preakness winner with Kent Desormeaux aboard, is listed at 2-5 odds in the morning line.

Post positions in the 10-horse field for the 1 1/2-mile Belmont were drawn this morning. Post time is scheduled for 6:25 p.m. (ABC).

Casino Drive, the Japanese-bred colt to be ridden by Edgar Prado, will break from the No. 5 spot and is listed as the 7-2 second choice.

Guadalcanal was a surprise last-minute entrant. He is winless in five starts, but was second by a nose in a 1 1/2-mile turf race at Churchill Downs in his last start. At 50-1, Guadalcanal has the longest odds on the board.

Here is the field, with jockey and morning line odds:

1. Big Brown, Kent Desormeaux, 2-5

2. Guadacanal, Javier Castellano, 50-1

3. Macho Again, Garrett Gomez, 20-1

4. Denis of Cork, Robby Albarado, 12-1

5. Casino Drive, Edgar Prado, 7-2

6. Da' Tara, Alan Garcia, 30-1

7. Tale of Ekati, Eibar Coa, 20-1

8. Anak Nakal, Julien Leparoux, 30-1

9. Ready's Echo, John Velzquez, 30-1

10. Icabad Crane, Jeremy Rose, 20-1

Weights: 126 pounds. Distance: 1 1/2 miles. Purse: $1 million.