Montreal Expos -- Waived RHP Luis Sanchez, a December acquisition from California Angels, for purpose of selling his services to Japan's Yomiuri Giants. Sold RHP Greg Bargar (5-17, 4.65 ERA in 1985 at AAA Indianapolis) to St. Louis Cardinals, who assigned him to AAA Louisville. Contract Signings -- Averting arbitration: Houston, 2B Bill Doran; Philadelphia, 2B Juan Samuel; California, SS Dick Schofield; Boston, IF Dave Stapleton; Chicago White Sox, IF Bryan Little, IF Wayne Tolleson; Oakland, LHP Bill Krueger. Pittsburgh Pirates -- Signed 3B Bob Miscik for a year; signed RHP Ed Farmer, 36, to a Class AAA contract. BASKETBALL

New York Knicks -- C Bill Cartwright had surgery, described as successful, on his left foot and the club expressed hope he will be ready for training camp next season. AUTOS

NASCAR -- Larry Pearson broke a 7-year-old Daytona International Speedway record and the Grand National Series mark, going 191.310 mph in a Chevy Nova in tentatively gaining the pole for Saturday's Goody's 300. COLLEGES

Boston U. -- Got oral commitments by six capital-area football players to enroll in September: WR Andy McBride, Marshall High School; lineman Ben Cowan, Wootton; RB Vincent Jackson, Paint Branch; LB-TE John Holland and TE Dean McKnight, West Potomac; DB-RB Daren Altieri, Mount Hebron. Maryland -- Recruited football WR-S Dean Green of Martinsburg (W.Va.) High School. Minnesota-Duluth -- Matt Christensen, first-line center on the hockey varsity, was in serious condition after collapsing of a stroke during a pickup game; some loss of function was reported on his right side. Navy -- C David Robinson CAA basketball player of week, second time this year.