Basketball

Larry Bird, who had one year left on his Boston Celtic contract, signed a two-year extension through the 1993-94 season, reportedly worth at least $4 million a year. Kevin Gamble, last year’s starting small forward, signed a reported three-year contract worth $3.5 million.

The Celtics cut Michael Smith, their first-round choice in the 1989 draft, along with four free agents--guards Anderson Hunt, Kennard Winchester and Rick Calloway, and forward Steve Scheffler.