DALLAS -- 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 thats one of the reasons why they brought me over here (from Portland). Through this rough patch, injuries and everything, everybody had to mold together. Its 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.Jimmy Butler led Chicago with 26 points.I dont think anybody played well tonight, Butler said. We didnt 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.TIP-INSBulls: C Robin Lopez has a career-high 11 straight games with 10 or more points. He scored 15 against Dallas. ... F Jimmy Butler has reached 20 points in 17 of 19 games. He scored on a drive with 1:00 left in the third quarter, but was charged with a technical foul for arguing that he had been fouled.Mavericks: G Wesley Matthews made 7 of 11 3-point attempts. ... C Andrew Bogut fouled out, but had 11 rebounds and a season-high eight points. ... The Mavericks 29 first-quarter points were a season high. ... Their largest margin of victory before Saturday was 12 points.WADE RESTSBulls G Dwyane Wade missed his second game this season, both to rest. He stayed in Chicago after Fridays win over Cleveland. Their flight landed in the DFW Metroplex at 2:30 a.m. for the second game in a stretch of four games in five days. Nikola Mirotic started in Wades place and was scoreless in 13 minutes played.NOWITZKI INDEFINITEThe Mavericks said that they no longer will keep a timetable for when F Dirk Nowitzki (strained right Achilles tendon) would play. Instead, his return will be listed as indefinite. He has played in only five games this season.We said Im still a few games away, but luck can change, so I just have to go day by day, Nowitzki said.At this stage in my career, I dont move well anyways, so if Im out there at like 80, 90 percent, I dont think Im a big help, so I want to make sure my bodys responding the right way and well go from there.UP NEXTBulls: Return home to play Portland on Monday night. Chicago won at Portland 113-88 behind Jimmy Butlers 27 points on Nov. 15.Mavericks: Host Charlotte on Monday night in the second game of a four-game homestand. Dallas lost to the Hornets on the road Thursday night.Joe Klecko Youth Jersey . Already owning gold from competition in Vancouver in 2010, Loch posted a combined four-run time of 3:27.526. That included a track-record third run of 51. Dennis Byrd Youth Jersey .ca looks back at the stories and moments that made the year memorable. http://www.jetsrookiestore.com/Jets-Joe-Namath-Jersey/ . By having more great seasons. Manning was the only unanimous choice for the 2013 Associated Press NFL All-Pro team Friday. Sam Darnold Jets Jersey . -- Timbers coach Caleb Porter didnt stray from his business-like approach to the season even after Portland downed the two-time defending league champion Los Angeles Galaxy to gain crucial playoff position. Jamal Adams Jersey .Y. -- Leading 3-0 with only 11:25 left, the Colorado Avalanche committed a seemingly meaningless penalty to give the New York Islanders a power play.DEL MAR, Calif. -- Jockey Flavien Prat, injured when tossed from a horse at the start of the third race on Sunday at Del Mar, was released from the hospital on Monday but has been ordered not to ride until Santa Anita begins Dec. 26 and thus will miss the final week of the Del Mar meeting, his agent, Derek Lawson, said Monday.Out of precaution, the doctor doesnt want him to ride until Santa Anita, so were done for Del Mar, Lawson said.Del Mars meeting has four days remaining, ending Sunday. Prat is currently the leading rider with 11 victories.Pratt was thrown to the ground at the start of race 3 on Sunday when his mount, We Go Now, stumbled badly.dddddddddddd Prat was cleared to ride by first-aid but prior to his remaining three mounts noticed blood in his urine and took off. He was taken to Scripps La Jolla Hospital and kept overnight for observation.The bleeding has subsided, Lawson said. But the doctor doesnt want him to get on a horse again until Santa Anita. ' ' '