Matz has been diagnosed with a torn left MCL, Jeff Jones of the Belleville News-Democrat reports.
Matz landed on the 15-day injured list with a knee issue Sunday and will visit with the team surgeon Monday to determine whether he'll require a procedure to address the issue. Manager Oliver Marmol didn't rule out the possibility of Matz returning to the field this season, but it seems likely that he'll be forced to spend more than the minimum of 15 days on the injured list. Marmol said that the team will be able to use a four-man rotation until early August since Dakota Hudson (neck) seems to be closing in on a return.
