ORLANDO, Fla. (AP) -- The Orlando Magic waived a trio of players and picked up the contract option on another in preparation for the start of the regular season.

General manager Rob Hennigan trimmed his roster to 15 players Saturday, waiving forwards Quentin Richardson, Justin Harper and Chris Johnson. The Magic also exercised the third-year contract option on 7-foot center Nikola Vucevic.

Vucevic, now under contract through the 2013-14 season, was acquired from Philadelphia this summer as part of the multi-team deal that sent Dwight Howard to the Los Angeles Lakers.

Richardson was the most tenured of the players waived, having appeared in 105 games with the Magic the past two seasons. Harper, who was dealt to Orlando on draft night in 2011, played in 14 games as a rookie last season.