Pierce and Moore had 10 points each in the fourth quarter.
Dwight Howard led the Magic with 16 points and 16 rebounds. Orlando had an 11-point lead entering the fourth quarter, but shot 2 of 17 in the final 12 minutes.
The Celtics have won three in a row for just the second time this season.
HAWKS: Requested waivers on little-used rookie guard Donald Sloan.
The team announced the move Thursday, one day after guard Kirk Hinrich made his season debut in a loss at San Antonio. Hinrich missed the first 18 games recovering from shoulder surgery.
The Hawks decided to keep 37-year-old Jerry Stackhouse instead of Sloan, who averaged 1.2 points while playing in just five games.
MAVERICKS: Dirk Nowitzki says he’s had a good week of work and is shooting to return to the lineup on Sunday.
Nowitzki spoke to reporters after practice Thursday, one day before the star forward will miss his fourth consecutive game as part of a planned hiatus to strengthen his sore right knee. Dallas is home against Utah tonight.
BUCKS: Center Andrew Bogut is out indefinitely after fracturing his left ankle Wednesday night in Houston.
Bogut’s left foot came down awkwardly on a Houston player’s foot after Bogut tried to block a shot in the first quarter. The Bucks said Thursday an MRI found Bogut fractured his ankle.
The 7-foot center was playing in his 400th career NBA game. Bogut has averaged 11.3 points, a team-high 8.3 rebounds and a team-high two blocks in 12 games.