ATLANTA -- Ryan Zimmerman was pleased to escape Atlanta's insufferable heat with another series victory over the Braves.
"The last two days, it's been tough," the Washington third baseman said. "It's not as bad for us as the pitchers, I think, but just having it beat down on you for 3½ hours, it takes it out of you."
The temperature rose four degrees from the first pitch to 105 by the middle of the eighth inning. The National Weather Service reported that Atlanta broke an all-time record high at 106 on Saturday.
"It's 120 out there," said Davey Johnson, Washington's 69-year-old manager. "I was sweating more in this one than I was yesterday. It was really hot."
Gonzalez (11-3) capped his second All-Star selection despite allowing five hits, four runs and four walks in five-plus innings. He struck out four and threw strikes in 64 of 114 pitches.
Washington, which has won four of five, took a 4-0 lead in the first off Tim Hudson (6-4). The NL-leading Nationals are 10-2-1 in their last 13 series matchups against the Braves.
Atlanta has lost three of four overall and has dropped 17 of its last 28 games against Washington at Turner Field.
"When you play a team in your division as much as we play each other, those things kind of go back and forth a little bit," Zimmerman said. "I remember years ago we couldn't lose to the Marlins and now we haven't been able to beat them lately. It's just one of those things."
Zimmerman made it 2-0 by hitting a two-run double to center over Bourn and later scored on Adam LaRoche's sacrifice fly. Ian Desmond followed with a walk and scored from first when Bourn allowed Rick Ankiel's single to bounce past him for an error.
Washington went ahead 5-1 in the fifth when Zimmerman hit his sixth homer into the second level of left-field seats. After adding a run-scoring single in the ninth, Zimmerman had his first four-RBI game since Aug. 19, 2011, against Philadelphia.
"I think I'm healthier than I was before," Zimmerman said. "You have a few good games in a row and your confidence gets going, and that's the name of the game. We've got to get some confidence, build momentum and just roll with it."
The Nationals led 6-1 in the sixth after Desmond doubled, moved to third on a wild pitch and scored on Jhonatan Solano's RBI single.
Freddie Freeman's 10th homer, a three-run shot to deep center, cut the lead to 6-4 and chased Gonzalez with no outs in the sixth.
"I was just trying to attack the zone," Gonzalez said. "It was dropping a little bit, my arm slot, but the bullpen came in and cleaned up my mess. They did a great job and I can't do nothing but tip my hat and tell them, 'Thank you so much.' "
Hudson allowed eight hits and five earned runs in six innings, dropping to 0-2 with an 8.53 ERA in two starts against the Nationals this season. He began the game with a 14-4 record and a 2.35 ERA in 24 career starts against Washington.
"I was going to pitch as long as I could," Hudson said. "It wasn't exactly a great first inning."
Gonzalez overcame a 14-pitch at-bat by Andrelton Simmons that resulted in a second-inning walk with two out. Ross followed with a hard single, and Hudson walked before Gonzalez escaped the bases-loaded threat when Bourn lined out.
Chipper Jones' RBI single cut the lead to 4-1 in the third, but Gonzalez settled down and needed just nine pitches to make it through the fourth.
Gonzalez, who pitched for Oakland last season, improved to 11-1 with a 2.85 ERA in his last 13 road starts.
"It's good to see when the offense is out there and they're pulling for you every inning," Gonzalez said. "I just wanted to do my best to keep us in the game as long as possible. They did the job and hit the nail on the head in the ninth inning."
The Braves reported a crowd of 18,796. Most of the seats in the lower level sections were sparsely filled as fans spent most of the game sitting in shaded areas. ... Atlanta signed RHP Ben Sheets to a minor league contract before the game. Sheets, 33, hasn't pitched since 2010. He will start Wednesday for Double-A Mississippi. ... Bourn went 0 for 4 and struck out in his first three at-bats. ... Gonzalez allowed just one homer in his first 14 starts, but has given up three in his last two. ... Hudson allowed just one homer in first eight starts, but has given up three in his last four. ... Zimmerman is hitting .378 with three homers and 13 RBIs in his last eight games.