Jayson Tatum scored 31 points and Jaylen Brown added 30 as the Boston Celtics fended off the Dallas Mavericks’ furious rally for a 106-99 victory for a 3-0 lead in the NBA Finals on Wednesday night.

Brown finished with eight rebounds and eight assists and Derrick White had 16 points as Boston extended its franchise record with a 10th consecutive playoff win and moved to 7-0 on the road this postseason.

The Celtics can wrap up the series and win their 18th title to break a tie with the Lakers for most NBA championships with a victory Friday night in Dallas.

None of the previous 156 teams to face a 3-0 deficit has rallied to win an NBA playoff series.

Kristaps Porzingis was ruled out about two hours before the game because of a rare tendon injury in his lower left leg sustained in Game 2. But the Celtics improved to 10-1 in these playoffs without the 7-foot-2 Latvian.

Kyrie Irving scored 35 points for Dallas and Luka Dončić added 27 before he fouled out with 4:12 remaining.

The Celtics opened a 91-70 lead at the end of a 20-5 run early in the fourth quarter, but the Mavs answered with a 22-2 spurt to pull within 93-92 on Irving’s jumper with 3:37 left.

Brown made a layup and White hit a 3-pointer before Irving sank a pair of free throws. Tatum dunked and Brown drilled a long jumper sandwiched around Dereck Lively II’s dunk to put Boston up 102-98.

PJ Washington and Irving both missed 3s and Tatum’s two free throws with 15 seconds left sealed the win.

Irving’s personal losing streak against the Celtics – his former team – reached 13 games.