BASEBALL American League
* CLEVELAND INDIANS -- Optioned Mike Christopher, pitcher, to Colorado Springs of the Pacific Coast League. Sent Jesse Levis, catcher, and Wayne Kirby, outfielder, to their minor league camp for reassignment.
* MINNESOTA TWINS -- Sent Mauro Gozzo, pitcher; David McCarty, outfielder; and Danny Sheaffer and Jay Owens, catchers, to their minor league camp for reassignment. Optioned Shawn Gilbert, infielder, and Mike Trombley, George Tsamis and Rob Wassenaar, pitchers, to Portland of the Pacific Coast League.
* TORONTO BLUE JAYS -- Optioned Domingo Martinez, infielder, Al Leiter, pitcher, and Randy Knorr, catcher, to Syracuse of the International League.
* MONTREAL EXPOS -- Optioned Dave Wainhouse and Matt Maysey, pitchers, and Rob Natal, catcher, to Indianapolis of the American Association.
* NEW YORK METS -- Optioned Julien Vasquez, pitcher, to Binghamton of the Eastern League, and Eric Hillman, pitcher, to Tidewater of the International League.
* PITTSBURGH PIRATES -- Sent Dave Clark and Ty Gainey, outfielders, to their minor league camp for reassignment.
* SAN DIEGO PADRES -- Named Mario Soto Dominican Republic scouting coordinator.
BASKETBALL National Basketball Association
* HOUSTON ROCKETS -- Suspended Hakeem Olajuwon, center, indefinitely without pay for refusing to suit up after a doctor had cleared him to play.
World Basketball League
* DAYTON WINGS -- Acquired the rights to Tony Harris, guard, from the Halifax Windjammers for a 1992 first round draft pick.
FOOTBALL National Football League
* CHICAGO BEARS -- Announced the retirement of Jim Covert, offensive tackle.
* INDIANAPOLIS COLTS -- Announced the retirement of Donnell Thompson, defensive end.
* NEW YORK JETS -- Signed Pat Chaffey, fullback, and Troy Sadowski, tight end.
* PHILADELPHIA EAGLES -- Signed John Bruhin, guard, to two one-year contracts.
Canadian Football League
* CALGARY STAMPEDERS -- Signed Doug Flutie, quarterback, to a four-year contract.
HOCKEY National Hockey League
* OTTAWA SENATORS -- Named John Ferguson director of player personnel.
* VANCOUVER CANUCKS -- Sent Robin Bawa, right wing, to Milwaukee of the International Hockey League.
SOCCER American Professional Soccer League
* SAN FRANCISCO BAY BLACKHAWKS -- Signed Eric Wynalda, forward; Dominic Kinnear, midfielder; and John Doyle, defender.
* CATHOLIC U. -- Fired Bob Valvano, men's basketball coach.
* MIT -- Announced the resignation of Royce Flippin Jr., athletic director, effective at the end of August.
* RICE -- Announced the resignation of Scott Thompson, basketball coach.
* ST. LAWRENCE -- Named Dennis Riccio football coach.