Casey McGehee followed Fielder’s tying hit with a two-run single off Manny Acosta, capping a four-run rally.
The Brewers blew a late 7-1 lead, but came back after Angel Pagan hit a two-run homer off Rodriguez (5-2) in the eighth. Mets reliever Jason Isringhausen (3-3) couldn’t get an out in the ninth and left after a bases-loaded walk.
In Denver, Dexter Fowler atoned for a crucial mistake by hitting an RBI single with two outs that gave the Rockies a win over the Dodgers.
Fowler misplayed a line drive by Trent Oletjen into an inside-the-park homer in the 12th that gave Los Angeles a 6-4 lead.
But Fowler led off the bottom half with a walk and scored when Todd Helton doubled on the 15th pitch from Javy Guerra . Helton, who earlier homered on his 38th birthday, helped set up a tying grounder by pinch-hitter Eliezer Alfonzo .
In Pittsburgh, Neil Walker had two RBI singles, the second driving in Andrew McCutchen with the go-ahead run in the seventh inning, and the Pirates beat the Reds.
Walker’s hit off of Aroldis Chapman (2-1) was his third hit of the game, and Brandon Wood followed with an RBI double, allowing Pittsburgh to improve to 8-3 against the Reds this season.
Charlie Morton continued his mastery of Cincinnati with six effective innings, and McCutchen and Ryan Ludwick each had two hits for the Pirates, who have won three of five.
In Houston, Jose Altuve hit an inside-the-park drive for his first major league home run, a leadoff shot that sent the Astros over the Giants.
Altuve had three hits and fellow rookie J.D. Martinez homered and drove in four runs as the Astros matched a season high with their fourth straight win.
Jordan Lyles (2-7) gave up two runs, both of them unearned, in five innings. Mark Melancon got two outs for his 13th save.
In Atlanta, Dan Uggla homered twice and drove in three runs, Brandon Beachy gave up only one run in six innings and the Braves continued to feast on the top teams in the NL West by beating the Diamondbacks.
Uggla’s two-run homer in the first gave Atlanta the lead. Uggla and Freddie Freeman hit back-to-back homers in the seventh.
After winning three of four from San Francisco, the Braves have won the first two games of the weekend series against the first-place Diamondbacks. Arizona has lost four straight.
In Washington, Roy Oswalt pitched eight-hit ball for eight innings, Wilson Valdez and Jimmy Rollins each drove in two runs and Hunter Pence homered to lead the Phillies over the Nationals.
Oswalt was supposed to start for the Phillies on Friday night, but after torrential rain arrived in the first inning, the game was delayed by 2 hours, 22 minutes, and he was scratched.
The Phillies, winners for the 81st time this year, scored twice in the fourth and three times in the sixth as Oswalt (6-7) struck out nine — the most since joining Philadelphia last July. He walked one and had runners on in every inning but the second and third.
In Chicago, Matt Garza pitched seven sharp innings, Aramis Ramirez homered and the Cubs beat the Cardinals.
Garza (6-9) scattered five hits, struck out eight and won at Wrigley Field for the first time since June 27.
Sean Marshall , Kerry Wood and Carlos Marmol finished off the shutout. Marmol earned his 29th save in 37 chances.
Ramirez’s two-run homer highlighted a three-run burst in the fourth off Edwin Jackson (2-2). Jackson allowed five hits in seven innings after leaving his last start with a right hamstring cramp.
In San Diego, Orlando Hudson homered and drove in four runs, Nick Hundley also homered in going 4 for 4 and the Padres romped past the Marlins.
Hudson connected for a three-run shot in the first. One pitch later, Kyle Blanks homered into the second deck of the brick Western Metals Supply Co. building in the left field.