General manager Frank Wren said on Monday that Overbay will report to Triple-A Gwinnett on Wednesday and start playing on Thursday. Wren said that the plan would be for Overbay to get ready at Gwinnett and come up to the Braves when rosters expand on Sept. 1.
Overbay would be eligible for postseason play because he signed with the organization prior to Sept. 1.
"[It] will give us another left-handed bat off the bench," Wren said. "Obviously, he's a first baseman that can give, based on how [manager] Fredi [Gonzalez] wants to use him, give Freddie [Freeman] a day off. We feel like he's a nice addition, gives us another veteran guy that can give you professional at-bats off the bench."
Overbay was designated for assignment by the Arizona Diamondbacks at the end of July. He was hitting .292 in 45 games this season.
"I think he wanted to take his time and make sure he made the right decision," Wren said. "We've been talking about once a week since then. There wasn't a great deal of urgency on either side, but he does need to start playing, and we need to have him in the organization prior to Sept. 1."