Updates on Kentucky Derby contenders and other news as the Run for the Roses is now just four days away.

Bubble watch: In the final hours before entries are taken Wednesday morning, the field continues to be in flux. As of late Tuesday, there were as many as 24 horses hoping to enter the Derby field, with those on the outside looking in due to insufficient earnings hoping for last-minute defections. The most likely to come out is Todd Pletcher's Interactif, a stakes winner on the turf. Although the colt worked strongly at Churchill Downs on Monday, Pletcher called him "unlikely" to run. But on Tuesday, he said the colt's status was still being considered and the final decision would come Wednesday morning before entry time. Should Interactif - or anyone else - withdraw, the first horse to get in would be Backtalk, winner of the Bashford Manor and Sanford. A blind draw for post positions will take place at noon Wednesday at Churchill Downs.

Final tuneup: Once-beaten Conveyance, winner of the Southwest earlier this year, turned in his final Derby work on Tuesday morning, a bullet five furlongs in :59.80. The gray colt rolled through splits of :13, :25.20, :36.60 and :48 flat, galloping out in 1:13.

Looking awesome: Gotham winner Awesome Act also turned in his final move, going four furlongs in :48.20. With Julien Leparoux up, the colt went in splits of :13, :24.80 and :36.60 and galloped out in 1:00.80 and 1:15.40 for six furlongs. Awesome Act will school in the paddock Wednesday as he puts the finishing touches on his preparations. Trainer Jeremy Noseda, who wasn't able to make the trip from England last week because of ash generated by the volcanic eruption in Iceland, was expected to arrive in Louisville late Tuesday evening.

Musical riders: Leading NYRA rider Ramon Dominguez lost his planned Derby mount on Monday when Rule was declared out of the race by Pletcher. But Rick Dutrow jumped at the chance to get Dominguez on his longshot contender Homeboykris. Joel Rosario was bumped off Homeboykris, but promptly picked up the mount on Lane’s End winner Dean’s Kitten, who had been without a rider.

Oaks watch: Post positions were drawn and morning line odds were set on Tuesday afternoon for Friday’s 12-race card that includes six stakes races, including the Kentucky Oaks. Blind Luck, who drew post 5 in a full field of 14 under regular rider Rafael Bejerano, was installed as the 6-5 choice in the Oaks by Churchill Downs oddsmaker Mike Battaglia. The filly enters the race with victories in the Grade I Oak Leaf, Hollywood Starlet and Las Virgenes. Most recently, she took the Grade II Fantasy. Three other fillies were installed as 8-1 co-second choices: Santa Anita Oaks winner Crisp (who drew post 7), Davona Dale winner Amen Hallelujah (post 13) and Fantasy runner-up Tidal Pool (post 8). Fifteen fillies were actually entered in the Oaks, but Seeking The Title was excluded due to insufficient graded earnings. Also of note was who wasn’t entered, as Devil May Care’s name was not among those in the entry box. There was still a slim chance that the filly could have been cross-entered in the Oaks and Derby, a perfectly legal move. But as Pletcher’s comments Monday suggested, owner John Greathouse is all in on the Derby. Blind Luck galloped a mile and a half at Churchill on Tuesday and also visited the paddock and starting gate. Two other Oaks entries, Evening Jewel and Joanie's Catch, arrived from California and Calder, respectively. The consistent Beautician, who sustained a minor cut on her leg while training yesterday, is good to go, according to trainer Ken McPeek.

Notes: With only a few works left to be completes, Endorsement and Homeboykris will both breeze on Wednesday. ... Hopeful winner Dublin schooled in the paddock again on Tuesday. ... Nick Zito's pair of Jackson Bend and Ice Box schooled in the starting gate during training hours. ... Former favorite Eskendereya, withdrawn from Derby consideration on Sunday, is dealing well with his injury at Pletcher's barn. The big chestnut colt is walking the shedrow and receiving ice, poultices and anti-inflammatories.