ORLANDO, Fla., Oct. 24 (Ticker) -- Antoine Walker helped the Miami Heat overcome a dismal first quarter.

Walker scored 16 points and Alonzo Mourning added 14 as the Heat posted a 92-82 preseason victory over the Orlando Magic.

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Miami trailed, 31-12, after the opening period but outscored Orlando in each of the last three quarters to secure the victory.

In his first season with the Heat, Walker was an integral member of Miami's title team. On Tuesday, the 10-year veteran shot just 5-of-15 from the field but collected 10 rebounds and four assists.

Mourning made 4-of-7 shots and 6-of-10 free throws, grabbing six rebounds. Rookie Vincent Grier netted 11 points and grabbed eight boards for the Heat, who shot 45 percent (27-of-60).

Miami stars Dwyane Wade and Shaquille O'Neal did not play.

Hedo Turkoglu scored 18 points and Dwight Howard netted 14 for Orlando, which shot 37.5 percent (27-of-72).