Manager A.J. Hinch said Monday that Vierling (oblique) has begun a hitting progression but isn't yet ready to head out on a rehab assignment,
Evan Woodbery of MLive.com reports. "He's taking indoor swings and still doing some defensive work. He's just not full-go yet," Hinch said. "Given the time of year and the nature of the injury, a setback would likely end his season, so we have to be very careful."