Updated on 09/16/2011 7:15AM

Mayakovsky gets rained out

Sky Terrace splashes through the slop to deal Cashel Castle his first loss in the Derby Trial. Mayakovsky scratched because of the wet track.

LOUISVILLE, Ky. - A torrential downpour at Churchill Downs on Saturday resulted in the scratch from the featured of morning-line favorite Mayakovsky, the only horse in the race who could run back in next Saturday's Kentucky Derby.

Sky Terrace won the $112,800 Derby Trial, beating odds-on favorite Cashel Castle by two lengths, but the major news of the day focused on Mayakovsky.

Patrick Biancone, the trainer of Mayakovsky, made the decision to scratch his colt midway through the card, after watching steady rain soak the track into sloppy condition.

"He's never even trained on a sloppy track," Biancone said, while standing on a viewing platform just outside a fourth-floor dining room while watching the rain come down. "We had the driest winter in California."

Biancone said it was "very doubtful" Mayakovsky would run in the Derby, but said no final decision would be made until Tuesday. He said if Mayakovsky passes the Derby, he likely would be kept in sprints for the time being.

Entries for the Derby are taken on Wednesday, and Mayakovsky's status could impact the starting field. A maximum of 20 horses can be entered in the Derby, though more than that number want to run. If more than 20 are entered, the field is comprised of the highest earners in graded stakes races. Mayakovsky is among the top 20, so if he is entered, a bubble horse such as Windward Passage would be excluded. There is no also-eligible list.

Mayakovsky is owned by Michael Tabor, who also is a co-owner of Johannesburg with John Magnier. Castle Gandolfo is owned by solely by Magnier. If Sunday Break - who is below Windward Passage and U S S Tinosa on the earnings list - does not run in the Derby, Gary Stevens will ride either Johannesburg or Castle Gandolfo in the Derby.

In the Derby Trial, Sky Terrace set fractions of 22.69 seconds, 45.58, and 1:10.73 en route to a front-running victory in 1:36.87 for one mile on the sloppy track. He went off at 7-1 and paid $16.80 to win. Sky Terrace, who was third to Cashel Castle in the Lafayette Stakes at Keeneland in his last start, has now won 3 of 7 starts. Craig Perret rode Sky Terrace, who is trained and co-owned by Vickie Foley.

Cashel Castle suffered the first loss of his career after five victories. He finished one length in front of third-place finisher Ide Be Spencers.

In other Derby developments Saturday:

* Straight Gin, most recently fourth in the Blue Grass Stakes, worked five furlongs in 59.40 seconds at Churchill Downs, equaling the second-best time of 26 at the distance. Straight Gin has just $52,500 in earnings in graded stakes races, making him a longshot to get into the Derby. U S S Tinosa and Sunday Break are among the horses ahead of Straight Gin. Trainer Nick Zito said that if Straight Gin does not get into the Derby, he would be pointed to the second leg of the Triple Crown, the May 18 Preakness Stakes at Pimlico.

* U S S Tinosa, most recently fifth in the Santa Anita Derby, had his trip from northern California to Kentucky postponed by trainer Jerry Hollendorfer. U S S Tinosa is still not assured a starting berth in the Derby, even if Mayakovsky were to be taken out of the equation. U S S Tinosa needs another defection from the horses ahead of him on the earnings list to get in. Hollendorfer said U S S Tinosa would be flown to Kentucky on Tuesday, and that if he does not get into the Derby field, he could await the Hawthorne Derby on turf on May 11.

* Richard Migliore has picked up the ride on Windward Passage, who most recently finished in a dead heat for third in the Arkansas Derby, according to Barry Irwin, the president of the Team Valor syndicate that owns Windward Passage.

- additional reporting by Steve Andersen