NBA -- Fined Houston Rockets C Ralph Sampson $2,000 for punching Bill Hanzlik of Denver Nuggets. BASEBALL

Texas Rangers -- Signed P Jeff Russell and Ricky Wright and C Orlando Mercado and Gino Petralli to one-year contracts. Cincinnati Reds -- Signed P Ron Robinson and John Franco and OF Kal Daniels to one-year contracts. Montreal Expos -- Signed C Randy Hunt to a one-year contract. Renewed the contracts of P Joe Hesketh and Tim Burke. California League -- San Jose Bees agreed to terms with P Mike Norris, who is under threat of a 60-day suspension for alleged involvement with drugs. BOXING

WBC -- Hector (Macho) Camacho will defend his lightweight title against former titleholder Edwin Rosario of Puerto Rico June 13 at Madison Square Garden; also on the card will be a 10-round heavyweight bout featuring Mike Tyson against an opponent to be determined. FOOTBALL

San Antonio Gunslingers -- Put up for auction after a judge ruled the franchise's South Texas Sports Inc. must pay a $651,290 debt to former players. COLLEGES

La Salle -- Announced resignation of basketball Coach Dave (Lefty) Ervin. George Washington -- Senior Bill Marshall qualified for the NCAA Division I wrestling championships (March 13-15 at Iowa) in the 126-pound class.