PORTLAND, Ore. — Dirk Nowitzki had 33 points and 11 rebounds, and the Mavericks withstood a furious Portland comeback to beat the Trail Blazers 103-96 last night and take the first-round playoff series in six games.

The Mavericks advanced to face the defending champion Lakers, who beat New Orleans 98-80 last night to take that first-round series.

Jason Terry finished with 22 points as the Mavericks snapped the home-court advantage that each team had held during the playoffs and the regular season.

The Blazers led by as many as 12 points early after Gerald Wallace went on a tear with 13 first-quarter points. But Wallace left the game for much of the second quarter with a sore back and Portland surrendered the lead.

Wallace would return to finish with 32 points and 12 rebounds. LaMarcus Aldridge added 24 points and 10 rebounds.