General manager Frank Wren said the club hasn't established a firm schedule for Simmons' rehab and won't until Lourie officially clears him to start playing games.
Simmons will be reexamined by Lourie on Sunday. If that goes well, he would likely start his rehab assignment Tuesday. Where he would go has yet to be determined. With the Minor League regular season ending this weekend, Simmons will have to join one of the Braves' affiliates that is in the playoffs, likely either low Class A Rome or high Class A Lynchburg.
During the Braves' last road trip, Simmons worked out with Triple-A Gwinnett and fielded ground balls before Friday's 8-5 loss to the Phillies at Turner Field.
Simmons said he feels good and is just waiting to get cleared to play in games.
He has been sidelined since the All-Star break. Before the injury, Simmons was hitting .296 with a .452 slugging percentage in 33 games since making his Major League debut June 2.