Philadelphia, PA (My Sportsbook) - Kentucky Derby winner Mine That Bird and Preakness Stakes champ Rachel Alexandra each took to the track on Monday in preparation for their respective weekend starts. The two leading three-year- olds will both start in stakes events this week at separate tracks.

Mine That Bird arrived Friday afternoon at Mountaineer Park from Churchill Downs in a van driven by trainer Chip Woolley. The gelding worked Monday morning for Saturday's 1 1/8 mile West Virginia Derby, his first start since finishing third to half-brother Summer Bird in the Belmont Stakes.

"He had three hard races (the Triple Crown events) back-to-back," Woolley said, "and we wanted to give him plenty of time to settle and build up again."

'Bird' went a half-mile in just under 50-seconds with local jockey John Perez in the saddle for the workout.

Voted Canada's 2008 champion two-year-old, 'Bird' is expected to start in the $1 million Travers at Saratoga on Saturday, August 29. Owned by Mark Allen and Dr, Leonard Blach, the three-year-old will then be shipped to Santa Anita for the $5 million Breeders' Cup Classic on Saturday, November 7.

The Kentucky Derby winner has earnings of more than $1.8 million this year and has a career record of five wins in 11 races and earnings of $2,121,581.

Leading filly Rachel Alexandra, who will be shipped to Monmouth Park for Sunday's $1.25 million Haskell Invitational on Friday, put in her last workout Monday morning at Saratoga.

'Rachel' also worked four-furlongs in 49 1/5-seconds. The filly remains first in the latest NTRA thoroughbred poll. This week she received 10 first-place votes and 184 points. Champion mare Zenyatta is second with 177 points and seven first-place votes.

Rachel Alexandra became the first filly in 85 years to win the Preakness Stakes, and can become just the second filly to win the Haskell. Serena's Song won the stakes in 1995.

Owned by Jess Jackson and Harold McCormick, Rachel Alexandra crushed two rivals last time out at Belmont Park in the Mother Goose Stakes. She romped by better than 19-lengths in the 1 1/8 mile race. In May she won the Kentucky Oaks by more than 20-lengths.

A winner of her last seven starts, Rachel Alexandra has won almost $1.6 million this year with six wins and has banked nearly $1.8 million in 12 lifetime starts with nine victories.