Overbay has been effective as a pinch-hitter, batting .412 in that role entering Monday's series opener at Wrigley Field, but was limited to three at-bats during the Brewers' recent six-game homestand. He's been limited to 27 plate appearances since the All-Star break.
Reynolds entered Monday with 61 plate appearances since the break, and with his solo homer in the second inning, sealed his seventh consecutive season of 20-plus home runs.
"We envisioned coming into the season that [Reynolds] would get most of the [playing time], but I did leave it open to who was swinging better and try to get them in," Roenicke said. "Lyle was swinging better for a while, and I played him more. But it's been both matchups, plus [Reynolds] is outstanding defensively, which makes it easier.
"We put a bunch of guys [at first base] last year that never even played the position, and we suffered for it defensively. This year we're saving runs at that position. I think it's really important to have a good defensive first baseman. I think what it does to your pitching staff, to your infielders, giving them confidence -- it's really important. Usually, your big basher goes to first because he can't play somewhere else. I don't agree with that."
Adam McCalvy is a reporter for MLB.com. Read his blog, Brew Beat, and follow him on Twitter at @AdamMcCalvy. This story was not subject to the approval of Major League Baseball or its clubs.