The Baltimore Orioles today filled in the gaps created by Saturday night's trade of starting pitcher Juan Guzman, moving reliever Ricky Bones into Guzman's spot in the starting rotation and calling up reliever Jim Corsi from Class AAA Rochester to take Guzman's roster spot. However, both moves may be temporary.

Corsi, a 37-year-old right-hander, will join the Orioles on Monday in Oakland. The Orioles signed him to a minor league contract on July 2 after he was designated for assignment by Boston. In 10 relief appearances at Rochester, he was 0-0 with two saves and a 3.48 earned run average.

"We've had good reports" on Corsi, said Orioles Manager Ray Miller, who plans to use Corsi in long- and middle-relief. "His velocity has been 87, 88 [miles per hour], with tremendous sink. He's certainly experienced."

Miller indicated it would not be long before the club calls up 6-foot-6, 230-pound left-hander B.J. Ryan, who was acquired along with 17-year-old right-hander Jacobo Sequea late Saturday night from the Cincinnati Reds for Guzman and cash. Ryan was expected to report to Rochester today or Monday.

General Manager Frank Wren "wanted to send [Ryan] to Rochester for a few days to get his feet wet," Miller said.

Meanwhile, Bones will take Guzman's turn in the rotation Tuesday in Oakland and again Sunday at home against Detroit. "Obviously, if he pitches well, he'll stay" in the rotation, Miller said. "I think we need to find out more about him. . . . Right now, he's fresh, needs to pitch and he's been a starter before."

Bones, 30, is 0-2 with a 5.86 ERA in relief this season, but he was a starter for the first six years of his career. He averaged 10 wins a season in 1992-95 with Milwaukee, and was the Brewers' Opening Day starter in 1995 and 1996.

If the Orioles decide not to keep Bones in the rotation beyond two starts, they likely would replace him with either Doug Linton or Calvin Maduro, who both have pitched well for Rochester. The Orioles don't want to move Scott Kamieniecki back into the rotation because he has been effective out of the bullpen, and prized left-handed prospect Matt Riley, who turns 20 on Monday, won't be called up until September, if at all.

The Word on Guzman

Miller had these parting words in reference to Guzman: "Asking Juan to be our number three [starter] right now, I don't think he's pitching that well, to be honest. But on a good club as a fourth or fifth, those innings are pretty valuable."