"If we can get a couple days of BP under his belt, it might be as early as Saturday or Sunday that he can go out on a rehab and start on that process," manager Ned Yost said. "We're keeping our fingers crossed and see how it goes."
The regular season in the Minors ends on Monday although there's still a chance that Triple-A Omaha will make the Pacific Coast League playoffs, extending the Storm Chasers' season.
Hosmer also took hitting earlier in the indoor cage.
"He took two rounds of soft toss, two rounds of BP and felt great," Yost said.
Hosmer has missed all of August with a stress fracture in his right hand, the result of being hit by a pitch on July 20 at Boston.
Dick Kaegel is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.