ELMONT, N.Y., JUNE 3 -- Avies Copy today was added to the field of horses who will try to stop Alysheba's Triple Crown bid in Saturday's Belmont Stakes.

The 1 1/2-mile Belmont will be the fifth race in six weeks for Avies Copy, who finished third in the Kentucky Derby and fifth in the Preakness two weeks later.

Concerned the Lord Avie colt might be too tired after his triumph in the May 25 Jersey Derby, trainer Dave Kassen waited to watch Avies Copy work out before committing him to the Belmont. He was convinced after Avies Copy ran 1:02 1/5 in a five-furlong workout under exercise rider Debbie Twardy.

"Everything's a go," Kassen said. "He looks super. I can't see where he's doing a bit worse than he was before the Derby. If anything, he's doing as good or better.

"All the vital signs that indicate a horse is healthy are there. He's eating well, feeling good. He looks good. I couldn't be happier with this horse. . . . He's tougher than a pine knot."

Cryptoclearance, third in the Preakness, and Manassa Jack, the surprise long shot entrant from New Hampshire, also had official works today. Cryptoclearance went a half-mile in :51 3/5 at Belmont.

Manassa Jack worked a half-mile at Rockingham Park in :51, said trainer Mike Downing, who named Alberto Delgado as jockey.