Cardinals manager Oli Marmol said Sunday that Naughton underwent an MRI that revealed no structural damage to his strained left forearm, John Denton of MLB.com reports.
Naughton was placed on the 10-day injured list Saturday, but he appears to have avoided a potentially long-term injury. Marmol mentioned that the left-hander's recovery process will be mapped out over the next couple of days. It's possible Naughton is able to return to a relief role with St. Louis before the end of April.