LOUISVILLE, Ky. - Trainer Steve Asmussen has named David Flores to ride Storm Treasure in Saturday's Kentucky Derby. Storm Treasure is one of two Derby starters for Asmussen along with Private Vow who'll be ridden by Shaun Bridgmohan.

Storm Treasure is coming off a second place finish behind Sinister Minister in the Grade 1 Blue Grass. Mark Guidry rode Storm Treasure in the Blue Grass but was previously committed to Florida Derby runnerup Sharp Humor in the Derby.

- Additional reporting by Marcus Hersh

LOUISVILLE, Ky. - One of the major concerns with Brother Derek regarding the 132nd Kentucky Derby on Saturday is whether he can wait before making his run. He got plenty of practice on Monday morning at Churchill Downs. Trainer Dan Hendricks agonized before finally deciding to work Brother Derek late in the morning on a muddy track, and then Brother Derek had to await the arrival of jockey Alex Solis, who got lost driving to the track after a red-eye flight.

"I only know where the wire is," Solis said, sheepishly.

Monday, May 1 Cloudy, track muddy; 56¦

LOUISVILLE, Ky. - Monday morning was a long one for anybody curious to see Kentucky Derby workouts. The session began well before the break of dawn with a work by Storm Treasure and ended nearly four hours later, when likely favorite Brother Derek finally completed his half-mile drill following the late arrival of jockey Alex Solis, who flew here overnight from California.

LOUISVILLE, Ky. - The unbeaten Showing Up completed preparations for Saturday's Kentucky Derby by working four furlongs in 49.63 seconds Monday morning at Belmont Park. Jockey Cornelio Velasquez was up for the work.

Belmont clockers caught Showing Up getting his first quarter in 24 seconds and galloping out five furlongs in 1:03.60. Showing Up was working just nine days after he won the Lexington Stakes at Keeneland on April 22, his third win in as many starts.

CLOUDY/TEMP 56/TRACK MUDDY

LOUISVILLE, Ky. - Monday morning was a long one for anybody curious to see Kentucky Derby workouts. Beginning well before the break of dawn with STORM TREASURE and ending nearly four hours later when likely favorite BROTHER DEREK finally completed his half mile drill following the late arrival of jockey Alex Solis who flew here overnight on the red eye from California.

Showing Up, the Lexington Stakes winner, worked four furlongs in 49.63 seconds Monday morning at Belmont Park in preparation for Saturday's 132nd Kentucky Derby. Jockey Cornelio Velasquez was up for the move.

Trainer Barclay Tagg said he thought the work was a little slower than he was looking for, but still plans to send the unbeaten colt to Louisville on Thursday for Saturday's 132nd Kentucky Derby.

Belmont clockers timed Showing Up's first quarter in 24 seconds and caught him galloping out five furlongs in 1:03.60.

Trainer Dan Hendricks waited until 8:30 a.m. before finally deciding to work Brother Derek on Monday, and another hour for the arrival of jockey Alex Solis.

Brother Derek, the likely favorite for Saturday's Kentucky Derby, breezed a half-mile in 49.36 seconds over a muddy track at Churchill Downs. Brother Derek was one of three Derby hopefuls to work on Monday morning, along with Storm Treasure and Private Vow.

A.P. Warrior, who won the San Felipe Stakes at Santa Anita in March, worked six furlongs in 1:13.80 at Hollywood Park on Sunday.

Ridden by exercise rider Ramon Guerra, A.P. Warrior worked in company with stablemate Yankee Million. A.P. Warrior started five lengths behind Yankee Million, drew even on the outside with a quarter-mile remaining and was stronger through the stretch, finishing a length in front.

A.P. Warrior finished third in the Santa Anita Derby in his last start.

Ramon Dominguez will ride Bluegrass Cat in the , trainer Todd Pletcher confirmed Sunday morning.

Dominguez replaces John Velazquez, who was injured in a spill two weeks ago at Keeneland. This will be the third straight Derby in which Dominguez has ridden. In 1994, he finished ninth board Tapit. Last year, he finished last on High Limit.

"He's a patient rider and we would like to see the horse settle in mid pack," Pletcher said in explaining his decision. "I don't think he's a very difficult horse to ride."

LOUISVILLE, Ky. - It was the perfect storm. With the Kentucky Derby just one week away, trainers on edge about getting in final works for the race, and rain fast approaching, 13 3-year-olds whose connections are desirous of running in the 132nd Derby on May 6 recorded workouts as light rain fell on Saturday morning at Churchill Downs.