Joe Johnson had 33 points and the Hawks beat the Blazers 107-96 Sunday night, snapping a nine-game losing streak to Portland.
The Hawks had not won at the Rose Garden since Dec. 15, 1997. The nine-game losing streak dated to 2002.
"To come into their house, it was big," Johnson said.
Salim Stoudamire, a Portland native, hit a 3-pointer to put the Hawks up 87-70 in the third quarter for their biggest lead of the game.
Zach Randolph's hook shot for the Blazers narrowed it to 94-87 in the fourth, but Tyronn Lue hit two straight jumpers to put the Hawks up 101-88 and the fans at the Rose Garden booed the home team before streaming out.
The victory snapped Atlanta's three-game road losing streak.
"They were making some shots, but we came right back and countered them, that's a big thing on the road," Johnson said. "When they make a run you gotta make one right back. We played our hearts out tonight. We showed up tonight and got a big victory."
The Hawks play Tuesday at Seattle, the second game of their five-game trip.
After opening 4-2, the Blazers have lost five straight and 10 of 12, including a 91-89 defeat to visiting Orlando on Friday night.
Randolph had 30 points for the Trail Blazers. Rookie Sergio Rodriguez added 11 assists off the bench.
"For a month we were scrapping and doing some things," Blazers coach Nate McMillan said. "And now, as young guys, I think we're searching."
Atlanta's Josh Smith left Friday's 106-95 loss at home to Cleveland after he was poked in the eye. Hawks coach Mike Woodson listed Smith as day-to-day, but he started Sunday wearing protective eyewear and had 13 points and 12 rebounds.
Lue, who finished with 19 points, was full of praise for Johnson.
"He's great. He can shoot the 3, post up, shoot off the dribble, handle it, pass, pick and roll, and defend," Lue said. "He's one of the top five two-guards in this league. He's carrying this team."
It was Webster's 20th birthday and he looked determined to get his starting job back. He finished with a season-high 18 points.
The Blazers struggled defensively.
"Defensively, the coach says it's up to the players. We need to dig down and make some defensive stops," Blazers guard Jarrett Jack said. "He sees it in glimpses, like earlier in the season. We need to get back to doing that."
Stoudamire hit a 3-pointer to put Atlanta up 40-32, but Webster answered with a 3-pointer for Portland. Johnson came back with another 3 for the Hawks, before Rodriguez hit a 3-pointer for the Blazers to narrow it to 43-38.
The Hawks led 60-52 at the half.
The tough times are here," McMillan said.
- Portland rookie Brandon Roy has shown improvement and will begin low-impact rehabilitation of his heel injury. He will not make the team's upcoming road trip and will be reevaluated upon the team's return.
- The Blazers open a season-high six-game road trip with a matchup against Detroit on Tuesday.
- Hawks coach Mike Woodson had never defeated the Blazers.