Making official what had seemed obvious for more than a week, trainer Bob Baffert on Sunday announced that Jaycito would not make this year's Kentucky Derby on May 7, owing to a foot bruise that has prevented the colt from working for more than three weeks.

"You've got the super-duper official word," Baffert said Sunday morning from his home near Santa Anita.

LOUISVILLE, Ky. -  Neither steady rain, a sloppy track, nor even a little thunder and lightning could keep Kentucky Derby hopefuls Mucho Macho Man and Stay Thirsty from keeping their appointed rounds and working at soggy Churchill Downs on Sunday morning.

INGLEWOOD, Calif. - Jockey Patrick Valenzuela will ride Santa Anita Derby runner-up Comma to the Top in the Kentucky Derby at Churchill Downs on May 7, co-owner Gary Barber said at Hollywood Park on Saturday. The Kentucky Derby will be the first time that Valenzuela has ridden Comma to the Top.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail

LEXINGTON, Ky. – Derby Kitten ended a big afternoon for Ken and Sarah Ramsey when rallying from last to post a 9-1 upset Saturday in the 30th running of the Grade 3, $200,000 Coolmore Lexington Stakes at Keeneland.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail

A scheduled six-furlong workout for Kentucky Derby hopeful Animal Kingdom didn't exactly work out the way trainer Graham Motion planned at Keeneland on Saturday.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail

BOYNTON BEACH, Fla. – After watching Pants On Fire scorch five furlongs in 58 and change eight days earlier, trainer Kelly Breen wanted a little something easier out of his Louisiana Derby winner Saturday morning at Palm Meadows. And that’s exactly what he got.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail

LOUISVILLE, Ky. – Florida Derby runner-up Shackleford led a small cast of prominent Kentucky Derby and Oaks hopefuls breezing at Churchill Downs Saturday, working five furlongs in 1:00.20 over a sloppy racetrack hammered by overnight and morning rain.

Working by himself with Tammy Fox up, Shackleford skipped over the wet surface, going in steady splits of 12 seconds, 23.80, 35.60, and 47.80, before galloping out in 1:14. His work was among the best of the morning.

Shaun Bridgmohan will ride Santiva in the May 7 Kentucky Derby, reuniting the team that won the Kentucky Jockey Club over the Churchill Downs track last fall, trainer Eddie Kenneally said Friday.

Santiva most recently finished ninth as the favorite in last Saturday’s Blue Grass Stakes, in which he was the favorite. He was ridden that day by Julien Leparoux, whose Derby mount is Dialed In, the likely favorite for the race.

Even though he has won the Kentucky Derby three times in the last four years, jockey Calvin Borel, as of Friday, still did not have a confirmed mount for this year's race on May 7, according to his agent, Jerry Hissam.

"If I had one, I'd jump for joy," Hissam said.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail

Uncle Mo galloped 1 1/4 miles at Churchill Downs on Friday morning and will have a workout on Tuesday, trainer Todd Pletcher said Friday.

KENTUCKY DERBY NEWS: Track all the 3-year-olds on the Triple Crown trail