Stubbs, who has been out since June 6 with a strained left oblique, made his second of three scheduled starts for Dayton on Saturday, again playing without pain.
Stubbs played seven innings in the 6-3 loss, going 0-for-4 at the plate with one strikeout.
Stubbs played five innings Friday night with an 0-for-2 showing at the plate, and is set to play a full nine innings Sunday before returning to the club Monday.
"That's the plan, but I have a lot of plans," Reds manager Dusty Baker said. "It depends on how he feels. I'm sure he'll be back here, probably."