Dirk Nowitzki had 32 points-- seven of which in the extra period-- led the Dallas Mavericks past the Oklahoma City Thunder, 128-119 in an overtime thriller in Dallas, Texas on Tuesday.

These teams could potentially meet in the first round of the Western Playoffs. Currently, the Thunder (52-19) are in 2nd place in the conference while the Mavericks (43-29) are in 8th place.

The win was enough for Dallas to move ahead of the idle Phoenix Suns (42-29) by half a game.

There were lots of help for Dirk in this upset win by Dallas, which has now won the season series over OKC, 2-1. Jose Calderon finished with 22 points and 8 assists while Monta Ellis and 17 markers and 4 steals. Off the bench, the Mavs got double-figures from Vince Carter (17 points) and Jae Crowder (10 points).

Kevin Durant had 43 points and Russell Westbrook had 22 for the Thunder, which had their four-game winning streak snapped. OKC is now 2 and 1/2 games back the San Antonio Spurs (54-16) for the best record in the NBA.

View the slideshow for images of the OKC-DAL game on Tuesday.

NBA Oklahoma City Thunder at Dallas Mavericks
Mavericks celebrate after big win over Oklahoma City Thunder Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Dirk Nowitzki had 32 points while Jose Calderon had 22 markers to lead the Mavericks in scoring Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Dirk disagrees with an official on a call Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Dirk celebrates after a big shot vs. OKC. Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Serge Ibaka had 10 points, 5 rebounds a blocked shot vs. Dallas Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Serge Ibaka slams one home. Reuters
NBA Oklahoma City Thunder at Dallas Mavericks
Kevin Durant finished with 43 points, 5 rebounds and 6 assists for OKC. Reuters