Fielder owns five of the 33 seasons with at least 30 home runs in club history. Gorman Thomas (1978-80, '82) and Jeromy Burnitz (1998-2001) each topped 30 home runs four times. Ryan Braun needs five more homers this season for his third 30-homer season.
The Brewers were in an 8-3 hole when Fielder sent his opposite-field solo homer to left against Fernando Salas in the eighth inning. It capped off a day in which all 12 runs were scored on seven home runs between the two teams.
The blast was the 222nd of Fielder's career, second-most in Brewers history and 29 shy of Robin Yount's franchise-record total.
"I like to see him whenever he's going to the opposite field," manager Ron Roenicke said.
If Fielder wants to chase Yount, he and the Brewers will have to reach terms on a new contract. Fielder, 27, is on track to be one of baseball's most coveted free agents this winter.