Undefeated pitcher Mike Flanagan, who has been on the disabled list since May 17 with torn ligaments in his left knee, is scheduled to start Saturday night against Chicago, Ray Miller, Orioles' pitching coach, said today.

The Orioles also reactivated pitcher Tippy Martinez from the disabled list and assigned pitcher Paul Mirabella to their Rochester farm team.

Martinez underwent an emergency appendectomy July 9.

Jim Palmer, also out with an injury, has been pitching in simulated games and batting practice, but may start a few games in the minors before returning to the Orioles' 25-man active roster, Miller said.

Flanagan, who was 6-0 with a 2.72 ERA at the time of his injury, threw 33 pitches in three innings of simulated game action before today's 6-0 victory over Texas. He then pitched five to seven minutes of batting practice.

Flanagan also will pitch batting practice before Tuesday's game in Cleveland.

"The pieces of metal on his brace have been rubbing together, but we will fix that," Miller said.

Martinez, the Orioles' best relief pitcher, was 5-3 with 10 saves and a 3.17 ERA when he went on the disabled list.

"I think it will take Tippy four innings to be ready," said Manager Joe Altobelli. "We'll give him a couple of outings in two games and then he'll be sharp." Martinez warmed up in the bullpen during today's game.

"We would have used him today if we had to," said General Manager Hank Peters. "Obvuiously he's not in top pitching shape, but he'll pitch himself back into shape."

Martinez, like Flanagan, had participated this week in a simulated game (pitchers throw for three outs, balls and strikes are called). "We do it this way so they can get the feel again," said Peters.

Palmer also threw batting practice and in the simulated game. Palmer threw for 20 minutes today.

Palmer (2-2, 3.62 ERA) might make a couple of starts in the minor leagues, probably with the Class A Hagerstown team, before rejoining the roster, Miller said.

"We will wait and see how he reacts," said Miller. "It looks like he's throwing the ball relatively well. Palmer has to believe he's healthy before he will be back."

Mirabella was purchased from Rochester on July 9 to replace Martinez.