DALLAS, Jan. 26 (Ticker) -- A rare technical foul against Maurice Cheeks may have helped the Portland Trail Blazers complete a rare unbeaten road trip.

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After Cheeks picked up a technical foul late in the first half, the Trail Blazers dominated the second half and rolled to a 100-93 victory over the Dallas Mavericks.

Portland had won the first three games of its four-game road trip but started very slowly in the American Airlines Center, where Dallas boasts a 19-2 mark. Portland trailed 31-19 after one quarter and 52-39 just before halftime.

The normally mild-mannered Cheeks, who provides balance for the temperamental Trail Blazers, argued a call and was whistled for a technical foul. Steve Nash made the free throw, giving the Mavericks their largest lead with 32 seconds to go.

"It's not usually me getting a tech," Cheeks said. "It's usually the players getting the tech. I don't know, I don't like to have to get a technical to have to get an effect on it, but I thought it was necessary at the time."

The Blazers scored the final basket of the first half, then turned things around in the second half. They claimed a 68-66 lead after three quarters, then pulled away in the final period.

"He told us to come out and be a little more aggressive on both ends and we did that," Blazers guard Derek Anderson said. "We started getting in guys' faces on jumpers and it worked for us. It's not like him to get technicals, but that's just part of it."

Among those who stepped it up were Anderson, who scored 15 of his 17 points after halftime; Zach Randolph, who scored all 16 of his points in the second half; and Bonzi Wells, who scored 12 of his 18 points in the second half and pulled down a career-high tying 14 rebounds.

"I wasn't real aggressive in the first half," Randolph said. "I only took two shots. Coach got me going kind of early (in the third). He started out with a play for me. I came out aggressive and played hard."

"We know we can play this type of basketball," Wells said. "Today we just put it on the court. We didn't do it for 48 minutes, but we played pretty good for 24."

Scottie Pippen scored 19 points to lead Portland, which improved to 15-9 on the road and recorded its 11th victory in its last 13 games away from home. It is 4-1 during the seven-game suspension of star forward Rasheed Wallace.

Michael Finley scored 27 points and Raef LaFrentz added 19 off the bench for the Mavericks, who had won the last three meetings between the clubs.

"They did a good job of containing us in the third quarter," Dallas guard Nash said. "We really had poor spacing in the lane. We weren't able to penetrate with the bad spacing. We did a bad job defensively."

The Blazers did a tremendous job on Mavs All-Stars Nash and Dirk Nowitzki, holding them to a combined 28 points on 10-of-29 shooting. Portland also held a huge 50-34 edge in rebounds.

"Zach had a tough challenge tonight without Rasheed helping," Wells said. "Zach had to just get up in him (Nowitzki). We helped him out a lot. I think Zach played well against him today."

"Coming out, I didn't really do anything in the first half so I knew I had to come out and play hard, play defense and worry about Dirk," Randolph said. "Defense was the big part."

After his scoreless first half, Randolph scored eight points in the third quarter. He had a pair of layups around two free throws to cut the deficit to 59-56 midway through the period.

Pippen made jumpers around a layup by Wells, giving Portland its first lead since the opening moments at 68-64. The Blazers never trailed again.

Pippen's hook and Anderson's 3-pointer pushed the advantage to 75-69 with 9:35 to play. Randolph had a three-point play just over two minutes later for an 80-73 bulge. "I keep telling him, we're so happy to see a guy, to see him grow up," Anderson said. "When (Randolph) was a rookie last year, he couldn't stay on the court that long and withstand all of that, mentally and physically. To see him play like that, man, it was great."

LaFrentz had a basket and 3-pointer to pull Dallas within a bucket, but Randolph answered with another three-point play. Nowitzki scored inside, but Anderson made another 3-pointer and Ruben Patterson had a steal and dunk for a 90-82 lead with 3:58 to play.

Even with all its firepower, Dallas got no closer than five points thereafter.

"They were aggressive to start the second half and that made what we were trying to do a lot more difficult," LaFrentz said. "We weren't able to get easy buckets. We weren't able to get in sync offensively."

Patterson scored 12 points for Portland, which shot 43.5 percent (37-of-85) from the field and totaled 52 points in the paint.

Nash scored 15 points and Nowitzki and Nick Van Exel added 13 apiece for Dallas, which shot 46 percent (35-of-76), including 8-of-22 from the arc.