DALLAS -- Anthony Morrow scored 21 points, Steven Adams and Jeremy Lamb added 19 apiece, and the Oklahoma City Thunder beat the Dallas Mavericks 118-109 on Friday night.

Reggie Jackson had 13 points before leaving early in the third quarter after landing hard on his right shoulder. Lamb added 11 rebounds for the Thunder (1-1), who had six players score in double figures.

Al-Farouq Aminu and Jae Crowder each had 14 points for the Mavericks (0-2), who lost Raymond Felton late in the first quarter with a sprained right ankle.

Dallas' Dirk Nowitzki (right-hip contusion) and Monta Ellis (sprained left knee), and Oklahoma City's Serge Ibaka (ankle sprain), Kendrick Perkins (quad strain) and Nick Collison (ankle sprain) all sat out.

Consecutive baskets by Adams midway through the fourth quarter gave Oklahoma City the lead for good at 90-88.