Felton led the Mavs with 21 points , Dirk Nowitzki scored 17 .
Rookie Salah Mejri , who started in Game 1 , came off the bench to collect 12 points and three blocks .
Felton led the Mavs with 21 points , Dirk Nowitzki scored 17 , and rookie Salah Mejri , who started in Game 1 , came off the bench to collect 12 points and three blocks .