Halladay (10-7) allowed five hits and struck out seven to record his second straight complete game. The All-Star right-hander outdueled Derek Lowe (9-7) and needed just 93 pitches to finish.
Chipper Jones homered for the NL East-leading Braves.
Lowe allowed two runs and six hits in seven innings, striking out six. Dobbs hit a two-run homer off Lowe in the sixth for a 2-1 lead.
At Milwaukee, San Francisco’s Aubrey Huff hit a two-run single after another costly error by Milwaukee shortstop Alcides Escobar .
Buster Posey added a solo homer in the eighth for the Giants, who won for the second time in 10 games.
Corey Hart extended his hitting streak to 20 games in the fifth, but Milwaukee finished 0 for 12 with runners in scoring position.
Kameron Loe (0-1) took his first loss in the majors since Sept. 28, 2007.
San Francisco starter Jonathan Sanchez (7-6) walked six and threw three wild pitches. He allowed five hits while throwing 115 pitches.
At Phoenix, Starlin Castro and Geovany Soto drove in two runs each and Tom Gorzelanny worked around six walks in five innings for Chicago.
The Cubs roughed up Ian Kennedy (3-7) for four runs the first two innings and won for the sixth time in 17 games. Kosuke Fukudome led off the game with a homer, Alfonzo Soriano notched his 800th career RBI with a solo shot in the eighth and Gorzelanny (3-5) got his first win since May 19.
Adam LaRoche homered and Kelly Johnson had two RBIs for Arizona, 1-3 under interim manager Kirk Gibson.
At New York, Joey Votto hit two home runs and Cincinnati took advantage of a rare overturned call by the umpires.
Drew Stubbs and Corky Miller both drove in two runs during a strange six-run fifth inning, one that included everything from a run-scoring triple by rookie pitcher Travis Wood to Mets manager Jerry Manuel getting tossed for arguing with the umpires.
Angel Pagan hit a solo homer and Alex Cora added two RBIs for New York, which answered with five runs in the bottom half of the inning but could never draw even.
Jordan Smith (2-1) pitched 2 1-3 innings of relief before turning it over to All-Star reliever Arthur Rhodes , and Francisco Cordero survived the ninth and earned his 23rd save.
Mets starter Mike Pelfrey (10-3) walked the bases loaded to start the fifth. An inside pitch appeared to graze the Reds’ Scott Rolen , who had checked his swing and started toward first base.
Plate umpire Jerry Meals rang him up on strikes, indicating a foul tip, even though replays appeared to support Rolen.
Rolen immediately began to argue and manager Dusty Baker challenged the call. The umpires gathered on the infield grass for several minutes to discuss it. They finally broke the huddle and sent Rolen to first, bringing home the go-ahead run.
At Los Angeles, Los Angeles’ Wes Helms hit a bases-loaded two-run single in the third inning after Florida scored its first three runs on a sacrifice fly, a groundout and a throwing error.
Nate Robertson (6-6) allowed four runs and seven hits in six innings, winning for the first time since June 18 against Tampa Bay.
John Ely (4-6) gave up six runs and nine hits in 2 2-3 innings, his shortest outing of the season. The rookie right-hander lost for the fourth time in his last five starts.
Ely gave up four consecutive hits to open the third, including Helms’ two-run single. Robertson’s RBI single chased Ely and extended the Marlins’ lead to 6-1.
Leo Nuñez pitched a perfect ninth for his 18th save in 23 chances.
