BALTIMORE, OCT. 6 -- The Maryland Racing Commission will hold a new hearing to resolve a complex development regarding a stewards' disqualification more than two months ago, commission executive director Ken Schertle said today.

In the sixth race at Pimlico July 26, Goose Bumps and Rocket Guitar ran one-two from start to finish. But the racing stewards disqualified Goose Bumps and jockey Mary Wiley for drifting out on Rocket Guitar and Kent Desormeaux exiting the first turn of the 1 1/16-mile turf race.

On an appeal by Goose Bumps' trainer, Dale Capuano, the racing commission reviewed the film and, in a rare action, overruled the stewards. But the ruling did not stand because Ed Horst, Rocket Guitar's owner, was not present after being notified of an incorrect hearing date.

Schertle said a date for the upcoming hearing has not been scheduled.

Clarence (Jo Jo) Ladner and Jesse Davidson, jockeys injured in last Tuesday's three spills at Pimlico, still are unable to ride.

Ladner, who had risen into Pimlico's top 10, incurred back injuries when Dancing June broke a leg and threw him. He rode in one race two days later, then canceled his assignments.

"I couldn't pull the horse up after the race," Ladner said. "I said to myself, 'If this happens during a race, and I'm caught in traffic, I could really be in trouble.' "

X-rays revealed no spinal problems, but Ladner is plagued by pinched nerves and muscle soreness, and doesn't know when he'll resume riding.

Davidson, third in victories when he dislocated a shoulder in a spill following a race, should be back by Friday or Saturday, agent Ken Sumida said today.

Alberto Delgado, the most seriously injured with a broken right collarbone, is expected out another six weeks.

Former Pimlico general manager Chick Lang Sr. will be given a testimonial tonight, during which he is expected to announce his signing with Triple Crown Productions.

Cardiff, Henry Clark's unbeaten 3-year-old gelding, made it four in a row today with a three-length victory over Wengen in Pimlico's $16,000 allowance feature.

Cardiff, the 11-to-10 favorite ridden by Gregg McCarron, has earned $53,499 and enhanced the reputation of his young sire, Oh Say. Sunday, Cardiff's half-sister, Sham Say, won the Smart Angle Stakes for 2-year-old fillies.

Lost Code, second to Afleet in Sunday's Pennsylvania Derby, was scheduled for arthroscopic surgery today in New Jersey to have a bone chip removed from his right knee. Trainer Bill Donovan said he hopes to have the colt ready to race in California in January.

A 3-year-old son of 1980 Preakness winner Codex, Lost Code won seven straight stakes from March to July before a third-place finish in the Haskell Invitational Handicap. He has earned $1,115,218 this year.

Kent Desormeaux, whose production hasn't suffered since his apprenticeship ended in August, continues to lead the nation's riders in victories. Through Saturday, he had 334 winners to 312 for second-place Pat Day. Without a base of operation since Arlington Park's meeting ended Sept. 7, Day has been riding in selected stakes races nationwide. He will begin riding regularly when Keeneland opens Saturday.