The next two weeks will go a long way toward determining whether Josh Johnson suits up again for the Florida Marlins in 2011.

On the disabled list since mid-May with shoulder inflammation, Johnson is working through a flat ground throwing program. He does not have a specific date to begin pitching off a mound, but the minor league seasons likely will be over by the time Johnson is ready to begin a rehab assignment.

The Marlins might be loath to activate Johnson if he's only pitched in simulated games. Johnson, who at one point was adamant about coming back, on Wednesday said his peace of mind wouldn't hinge on doing so.