Chicago Cubs -- Called up C Steve Christmas, LHP Guy Hoffman from AAA Iowa; sent down OF Brian Dayette. C Steve Lake becomes free agent rather than report to Iowa. Detroit Tigers -- Put OF Kirk Gibson on 21-day DL (sprained ligaments in left ankle); called up OF Pat Sheridan, OF Brian Harper from Class AAA Nashville. Pittsburgh Pirates -- Put RHP Ray Krawczyk on 21-day DL (sprained knee ligaments); recalled LHP Bob Patterson from AAA Hawaii. Toronto Blue Jays -- Activated P Bill Caudill, optioned LHP Steve Davis to AAA Syracuse. BASKETBALL
Cleveland Cavaliers -- F Roy Hinson had surgery on tendons in both feet; F Edgar Jones had arthroscopic knee surgery. COLLEGES
Virginia -- Named Jeff Jones (Virginia player 1978-82, graduate assistant and part-time coach last four years) assistant basketball coach. George Mason -- Women's soccer coach Hank Leung has been named assistant coach of U.S. women's national team. Ohio State -- Named Rick Barnes, former assistant at Alabama and George Mason, an assistant basketball coach. Nevada-Las Vegas -- Fired four-year football coach Harvey Hyde, who had nine players in legal trouble ranging from theft to assault in three months. HOCKEY
World Championships -- United States beat West Germany, 5-0; Czechoslovakia routed Poland, 8-1, in first-round relegation pool play at Moscow. HORSE RACING Florida -- Gov. Bob Graham signed bill allowing pari-mutuel thoroughbred racing on Sundays; Hialeah plans racing this Sunday. RUNNING
Boston Marathon -- Tommy Rueckert of Falls Church finished 767th (2:52:17); his name was omitted from previous results.