Guardians president of baseball operations Chris Antonetti said Sunday that Martinez has been diagnosed with a right foot strain following an MRI, Tim Stebbins of MLB.com reports.
Though Martinez will be held out of the starting lineup for Sunday's series finale versus the Red Sox, the Guardians view the diagnosis as a good outcome for the 24-year-old, and he could be available off the bench Sunday. With an off day on tap Monday, Martinez might be ready to rejoin the starting nine for Tuesday's series opener versus the Yankees.