Doctors at the Cleveland Clinic are administering daily doses of radiation to the left arm of former San Francisco Giants pitcher Dave Dravecky in an effort to avoid amputation, clinic spokesman Marian Mosley said Wednesday. Dravecky, of Youngstown, Ohio, started the daily treatments Monday and will be treated for about two weeks as an outpatient, Mosley said. Dravecky pitched eight years in the major leagues with the San Diego Padres and the Giants before a tumor was discovered in his left arm in September 1988. Surgeons removed the tumor and part of the deltoid muscle, and Dravecky returned to baseball in 1989. He won two games before his left humerus bone snapped while he was pitching against the Montreal Expos on Aug. 15, 1989. He had cancer operations Jan. 4 and in May at the clinic, and a subsequent analysis indicated a tumor had developed. Report: Bo, Mark Davis to Padres for Joe Carter SAN DIEGO _ The Kansas City Royals are exploring the possibility of trading All-Star outfielder Bo Jackson and reliever Mark Davis to the Padres for centerfielder Joe Carter, a newspaper reported Wednesday. Royals general manager John Schuerholz and Jack McKeon, the Padres' manager and vice president of baseball operations, confirmed that the clubs have talked about a potential trade but said nothing is imminent, according to the Los Angeles Times. "I've talked to Jack and (Padres assistant general manager) Bill Beck generally, but nothing specifically was discussed," Schuerholz said Tuesday. "We talked, and we asked each other what we were looking for." Official scorer resurrects Ripken's errorless streak BALTIMORE _ Record-book writers, get your asterisks ready. Cal Ripken's errorless streak is not over after all. Official scorer Billy Stetka, who charged Ripken with an error Tuesday when the Baltimore Orioles shortstop apparently muffed a cutoff throw from centerfielder Mike Devereaux, reversed his call early Wednesday. After viewing the videotape and talking with a few players and coaches, Stetka decided to give Devereaux a throwing error on the play. Around the bases Philadelphia activated left-hander Terry Mulholland off the 15-day disabled list Wednesday and optioned outfielder Jim Vatcher to Class AAA Scranton-Wilkes Barre. _ Compiled from Associated Press reports.