But in the bottom half of that inning, when he hit a three-run homer to give the NL a lead it wouldn't relinquish, Fielder made friends -- with the 47,994 fans who suddenly loved him, and with temporary teammates who were grateful for home-field advantage in the World Series, the prize for winning the Midsummer Classic.
"I'm going to give him a kiss on the cheek," said Brandon Phillips, second baseman for the division-rival Reds. "I told him already. I'll give him a kiss ... when I get dressed."
Facing lefty C.J. Wilson, Fielder -- hitting .291 off southpaws this year -- worked a 2-2 count, then got a cutter on the outside corner and drilled it over the center-field fence to become the first player in Brewers history to homer in the Midsummer Classic.
"Yeah," Fielder said, "it was a good at-bat."
And it was the perfect end to an eventful weekend.
Fans voted in three Brewers to start for the NL, but Braun has been out since July 2 with a strained left calf and opted to miss the All-Star Game (though he has been taking part in baseball activities and still plans on playing in the Brewers' second-half opener on Thursday).
Weeks and Fielder became acquaintances during a two-year stretch in which they played 12-and-under AAU ball, then became teammates in Class A, when Weeks was drafted a year after Fielder in 2003.
That started a path that took them through the Minor Leagues, into the Majors -- where they both hit their first homers on June 25, 2005 -- in the playoffs in '08 and, finally, the All-Star Game.
Weeks' first Midsummer Classic saw him finish 0-for-3 but notch a steal and score a run.
He also saw his buddy go from villain to hero.
"The boos, I thought, were just uncalled for, unprofessional, but it is what it is," Weeks said. "To go ahead and hit the home run and get the MVP, it was great for him."