ORLANDO — Reserve guard Victor Oladipo had 19 points, 8 rebounds and 6 assists in leading the Orlando Magic to a 110-91 victory over the Boston Celtics on Sunday night at the Amway Center.

It was their third consecutive victory. The Magic (9-8) are above the .500 mark going into December for the first time since 2012.

Magic center Nikola Vucevic had 18 points and 10 rebounds before fouling out with 2:07 remaining. Forward Tobias Harris had 15 points and 11 rebounds. Reserve forward Andrew Nicholson had 14 points and eight rebounds.

Isaiah Thomas led the Celtics with 20 points and seven assists. Avery Bradley had 17 points, Jae Crowder had 12 and David Lee had 11.

The Magic led by as many as 21 points early in the fourth, but their shooting went cold, allowing the Celtics to cut the lead to 96-84 midway in the period when Thomas hit back-to-back baskets. The Celtics never got closer than 12 points in the fourth quarter.

The Magic led 84-67 going into the fourth period. Channing Frye, who didn’t take a shot in the first half, hit two of his four 3-point attempts in the third period. Vucevic scored 10 points in the period.

The Magic scored 32 points in the second period for the 53-45 halftime lead. They struggled with eight turnovers in the first quarter, but followed with a hot-shooting second when they hit 13 of their next 17 shots.

Nicholson, who has worked his way into the regular rotation after hardly playing in the first few games, had 10 points by halftime. Oladipo had nine. Lee led the Celtics with 11 points in 10 minutes before intermission. Bradley had 10.

The Magic led 51-42 when Aaron Gordon hit a 3-pointer. The Celtics had tied the game at 35 on a 3-pointer by Lee, who scored nine consecutive Boston points.

Oladipo broke the tie with a 3-pointer and started an 18-10 run before halftime.

Grizzlies 92, 76ers 84

MEMPHIS, Tenn. — Power forward Zach Randolph posted a double-double, and point guard Mike Conley scored a game-high 20 points as the Memphis Grizzlies defeated Philadelphia 92-84 Sunday at FedExForum, sending the 76ers to their 18th consecutive loss to start the season.

The 76ers tied the NBA’s all-time mark for most losses to begin a season, set in 2009 by the New Jersey Nets. It was Philadelphia’s 28th consecutive defeat dating back to last season, the longest skid by a team in any major North American sport.

As has happened several times during the streak, the 76ers couldn’t hold a fourth-quarter lead. They went up 76-71 on a pair of free throws from guard Isaiah Canaan (team-high 16 points) at the 7:38 mark. However, the Grizzlies (10-8) went on an 18-3 run to go up 89-79 as Jeff Green (13 points) hit a 3-pointer at the 2:22 mark.

After that, the 76ers never made it a one-possession game.

Randolph finished with 17 points and 11 rebounds, and Memphis center Marc Gasol had nine points and 12 rebounds. Forward Matt Barnes chipped in 13 points, eight rebounds and five assists off the bench for the Grizzlies (10-8).

Memphis gave the 76ers extra opportunities by committing a season-high 26 turnovers, which Philadelphia converted into 28 points. However, the 76ers, who average more turnovers than any team in the NBA, gave the ball away 27 times Sunday, leading to 25 Grizzlies points.

Philadelphia center Jahlil Okafor just missed a double-double, ending up with nine points and 13 rebounds, and forward Robert Covington and Hollis Thompson each scored 12 points.

Memphis shot 42 percent from the field and 30.8 percent from 3-point range (four of 13). The 76ers shot 39 percent from the floor and made 12 of 36 (33.3 percent) from long distance.

The Grizzlies were up 37-31 at halftime after leading by as many as 11 points. Randolph and Barnes led Memphis with seven first-half points, and Canaan and Covington each had six points for the 76ers before the break.