RESIGNED: As vice-president of basketball operations for the Boston Celtics, K.C. JONES, 57, whose 20-year career with the team included playing on eight NBA championship teams and coaching two. Jones becomes assistant coach and consultant for the Seattle SuperSonics.
TRADED: By the Chicago Bears, quarterback JIM McMAHON, 30, who led the Bears to victory in Super Bowl XX, to the San Diego Chargers, for a conditional 1990 draft choice (page 20).
By the Pittsburgh Pirates, outfielder GLENN WILSON, 30, to the Houston Astros for outfielder BILLY HATCHER, 28.
DIED: TIM RICHMOND, 34, a former Indy 500 rookie-of-the-year driver who won 13 NASCAR races from 1980 to '87, including seven in 1986; of undisclosed causes; in West Palm Beach, Fla.
Wayne Moore, 44, a starting offensive tackle for the Miami Dolphins during the 1972 and '73 seasons, in which they won consecutive Super Bowls; of a heart attack; in Miami.