Lorenzen's shoulder showed no structural damage in an MRI taken Friday, Rhett Bollinger of MLB.com reports.
Lorenzen hit the injured list Thursday with a right shoulder strain, an injury which may partially explain his 13.09 ERA and 2.55 WHIP across his last three starts. Friday's test results indicate that he's avoided a worst-case scenario, but he still has more treatment to get through before he begins a throwing program.