DALLAS (AP) -- Wesley Matthews has taken greater responsibility with Dirk Nowitzki out of the Dallas Mavericks' lineup much of this season.
Matthews scored 20 of his 26 points in the second half of Dallas' 107-82 victory over the Chicago Bulls on Saturday night.
"Matthews was the star of the game, obviously," Mavericks coach Rick Carlisle said. "He is our leader right now with Dirk out. He really sets the tone for us in the locker room and on the floor. He is just the vocal guy."
Matthews has accepted the expanded role as Nowitzki has been limited to five games by a strained right Achilles tendon.
"I feel like that's one of the reasons why they brought me over here (from Portland). Through this rough patch, injuries and everything, everybody had to mold together. It's almost like we had to restructure ourselves. I think everybody has embraced that."
Harrison Barnes scored 17 of his 22 points in the first half to help Dallas improve to 4-15.
Chicago was coming off a 111-105 victory over defending champion Cleveland on Friday night.
[SHOP: Get your Bulls gear right here]
Jimmy Butler led Chicago with 26 points.
"I don't think anybody played well tonight," Butler said. "We didn't play with energy on either end of the floor."
Barnes powered the Mavericks to a 17-point first-quarter lead with eight points.
"They came out and threw the first punch and kept throwing, and we could just never recover from that," Bulls coach Fred Hoiberg said. "We did expend a lot of energy (Friday) night."
Dwight Powell (17) and rookie Dorian Finney-Smith (11) had career highs in scoring, and Deron Williams had a season-high 15 assists with only one turnover.
"The biggest thing was we were even (43-43) on the boards," Carlisle said. Andrew Bogut had a game-high 11 rebounds, and Powell grabbed eight.
Neither team scored in the first 2:15, but Dallas went on a 7-0 run over the next 1:20. The Mavericks led 23-6 with 3:17 left. The quarter ended with Dallas leading 29-18. Bogut had six points and eight rebounds.
Chicago pulled within six points three times in the second quarter, but Dallas finished the first half with a 57-45 lead. In the third quarter, Matthews had 14 points, and the Maverick led by as many as 21 points.