Overbay, who came to the Blue Jays in an offseason trade with the Brewers, spent the first five seasons of his career in the National League. He slumped to a .276 average in mid-June, but went on a tear once Interleague
In the last 15 games against the National League, Overbay hit .407 to raise his average above .300 for the season.
"I started feeling better, but that might be part of it, too," he said. "In this game, you have to play relaxed, and I'm a lot more relaxed than I was before because I know what the guys have and what to expect."
Overbay had at least two hits in five of six games to help fill the void left by Toronto's leading hitter, Alex Rios, who went on the DL last week with a staph infection in his leg.
Even though he wasn't as heralded as other offseason acquisitions like A.J Burnett, B.J. Ryan or Troy Glaus, the left-handed-hitting Overbay has been a force in the
fifth spot in the lineup all year. He is on pace to set career highs in both home runs and RBIs.
"He slipped by under the radar because of all the other signings we had in the offseason," Blue Jays manager John Gibbons said. "But he kind of anchors us in the middle and he's been very consistent. He's just a good hitter. It's an adjustment coming into a new league."
The honor is the Blue Jays' second of the season. Ace Roy Halladay won the award back in May.
Other players considered were Mariners catcher Kenji Johjima (.412, two home runs, seven RBIs), Twins pitcher Francisco Liriano (2-0, 1.20 ERA, 20 strikeouts), Orioles outfielder Nick Markakis (.591, one double, one triple,
three RBIs), Yankees third baseman Alex Rodriguez (.375, four home runs, 12 RBIs) and White Sox shortstop Juan Uribe (.348, two home runs, 12 RBIs).