HOCKEY Chicago Blackhawks -- Said they won't offer contract to veteran G Bob Sauve; team signed free agent G Bob Mason recently. Detroit Red Wings -- Signed RW Joe Kocur and G Darren Eliot, both free agents. BASEBALL Texas Rangers -- Said RHP Jose Guzman has been diagnosed as suffering from infectious mononucleosis. No announcement was made on how long he will be out. Cleveland Indians -- Reassigned pitching coach Jack Aker to player development and scouting duties for remainder of season; gave pitching coach's job to Steve Comer, who has been serving as coach with Kinston of Carolina League. New York Mets -- Reactivated IF Tim Teufel from 15-day DL; sent IF/OF Clint Hurdle to AAA Tidewater. California Angels -- Signed OF Tony Armas to minor league contract. BOXING Terry Marsh of England retained International Boxing Federation junior welterweight championship when Japan's Akio Kameda retired after the sixth round of the fight in London. COLLEGES Yale -- Named Donald Kagan, a professor of history and classics, athletic director. He replaces Frank Ryan, who resigned March 9 to become associate vice president for institutional planning at the university. Morehead State -- Named former major league pitcher Steve Hamilton acting director of athletics. Hamilton has been baseball coach at the school for 12 years. Southern Illinois-Carbondale -- Named Robert McCullum and Scott Howard assistant basketball coaches. FOOTBALL New York Jets -- Signed quarterback Bill Ransdell, a 12th-round draft pick.