CLEVELAND (AP) — Jarrett Allen’s dunk with 2:01 remaining in overtime gave Cleveland a 100-99 victory over the Dallas Mavericks on Saturday night, keeping the Cavaliers unbeaten in five OT games this season.

Dallas had three opportunities to take the lead in the final minute, including Christian Wood’s 30-footer as time expired. Frank Ntilikina was stripped by Donovan Mitchell and Kemba Walker’s jumper landed between the backboard and the rim on the other two.

Mitchell scored 25 points and Darius Garland had 18 points, seven rebounds and 12 assists for Cleveland, which has the best home record in the NBA at 14-2. Allen added eight points and 15 rebounds, and Evan Mobley had 17 points and eight rebounds.

Dallas forced OT on Walker’s driving layup with 3.5 seconds left in the fourth quarter, tying the score at 96-all. After Mitchell was called for an offensive foul with 0.7 ticks left, Tim Hardaway Jr. missed a half-court shot at the buzzer.

Four-time All-Star guard Walker, who signed with Dallas on Nov. 29, had 32 points and seven assists over 42 minutes in his third game. Wood had 26 points and 14 rebounds, and Hardaway scored 13 points.

Luka Doncic, the second-leading scorer in the NBA at 33.0 points per game, did not play for the Mavericks because of a right quadriceps strain.

The Cavaliers are 2-0 on their longest homestand of the season, a six-gamer that runs through Dec. 26. Cleveland is allowing a league-low 104.8 points per game.

Dallas was without its starting backcourt of Doncic and Spencer Dinwiddie (right knee maintenance), and center Dwight Powell (left thigh bruise). All three saw action Friday when the Mavericks beat Portland 130-110 at home.

Both teams were on the second half of a back-to-back set. The Cavaliers beat Indiana 118-112 at Rocket Mortgage FieldHouse, while the Mavericks did not check into their downtown Cleveland hotel until 3:37 a.m.