BASEBALL

Chicago Cubs -- Activated P Steve Trout from the disabled list; recalled OF Rafael Palmeiro from AAA Iowa; optioned P Mike Mason and P Drew Hall to AAA.

Kansas City Royals -- Placed IF Buddy Biancalana on the 15-day disabled list; recalled IF Bill Pecota from AAA Omaha.

Minnesota Twins -- Signed P Terry Forster and assigned him to AAA Portland.

Oakland Athletics -- Placed P Joaquin Andujar on the 15-day disabled list; called up P Dave Von Ohlen from AAA Tacoma.Montreal Expos -- Recalled P Jeff Parrett from AAA Indianapolis; optioned P Randy St. Claire to AAA.

Pittsburgh Pirates -- Cut IF Onix Concepcion.

BASKETBALL

Detroit Pistons -- Re-signed C Chuck Nevitt. Minneapolis Timberwolves -- Minneapolis lawyer and former NFL player Bob Stein, 39, was named president of the NBA expansion team, to begin play in the 1989-90 season.

Utah Jazz -- Promoted team president David Checketts to president/general manager. HOCKEY

Team Canada -- Named Philadelphia Flyers Coach Mike Keenan as coach for this summer's Canada Cup tournament. FOOTBALL

New York Giants -- DL George Martin won the Byron (Whizzer) White award, named for the Supreme Court justice and given to a member of the NFL Players Association for service to team, community and country.