Hart, whose 17 home runs were a National League best entering Saturday, also ranked third in the Majors behind the Blue Jays' Jose Bautista and the Tigers' Miguel Cabrera, who had belted 18 homers apiece.
With Hart swinging a hot bat over the last month, manager Ken Macha moved him to the No. 2 spot on Friday. Hart proceeded to go 2-for-3 with a home run and two RBIs.
"I kind of liked it last night," Macha said of the move. "The guy's swinging the bat. He's on base a bunch. I want those guys to get on base for Prince [Fielder] and [Ryan Braun]."
Macha likes the power potential of Hart batting between leadoff hitter Rickie Weeks and Fielder.
If Weeks gets on base in front of Hart, it gives the Brewers the chance for a quick two runs before recording an out. Regardless of his spot in the lineup, Hart continues to hit home runs, totaling 14 since May 15.
"He's a special hitter. He's got some tools that not everybody has," third baseman Casey McGehee said of Hart. "For him to be doing it as consistent as he is right now, is pretty impressive to watch.
"It just extends it so far. He's hitting second, and that worked. He's been hitting sixth, and that's been working. So when he's going good, it makes a huge difference."