The amount of time it has taken Stanton to progress to this stage was a topic of discussion with Jennings on Monday.
"I think it has to do with the strength factor in his hands and wrist," Jennings said of Stanton's recovery. "When you're a hitter, and the strength is not there, it's tough to feel comfortable swinging the bat. You can be a little tentative."
Stanton was hitting .265/.346/.606 with 27 home runs and 67 RBIs before suffering the injury in June. Despite missing nearly two months, he still entered Monday tied for fourth in the National League in homers and tied for 12th in RBIs.
"When he feels the strength is there, he'll step on the accelerator," Jennings added. "When he's healthy, he'll be back. I know he wants to finish on a positive note. I hope that can be sooner rather than later."
Brandon Curry is an associate reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.