Official release via NBA.com:
The Dallas Mavericks announced today that Kristaps Porzingis underwent surgery to address a lateral meniscus injury of his right knee. Porzingis suffered the injury in Game 1 of the Mavericks’ opening-round series against the L.A. Clippers on Aug. 17.
Porzingis will begin rehab immediately and there is no timetable set at this time.