But he appears to be over the injury, and is primed to make his big-league debut for the Braves. Olivera will likely be the Braves' regular third baseman for much of the final month of the season.
The team has not officially announced the callup.
Davies was drafted by the Orioles in 2011 as a 26th-rounder. This season, the righty went 6-8 with a 3.30 ERA in 24 appearances (23 starts) across the Orioles' and Brewers' Triple-A squads.
Freeman hurt his hamstring on Aug. 6 and has not played in any of the team's preseason contests. It's not clear if Freeman will play in the team's final game Thursday.
"He ran it well today," Falcons coach Dan Quinn said. "Limited reps, but it was awesome to see him."