Junior Guerra Out At Least Six Weeks With Strained Calf

4:15pm: Brewers manager Craig Counsell offered a more pessimistic timeline, tweets MLB.com’s Adam McCalvy. The Milwaukee skipper said that Guerra will miss a minimum of six weeks and added that Guerra’s calf injury is “significant.” Left-hander Tommy Milone will step into the rotation and start in Guerra’s place on Saturday.

April 4, 3:48pm: Guerra tells Todd Rosiak of the Journal-Sentinel the early prognosis following an MRI calls for an absence of four to six weeks (Twitter link).

April 3: Brewers righty Junior Guerra exited his Opening Day start after suffering a right calf strain running the bases, as Todd Rosiak of the Milwaukee Journal-Sentinel reports (links to Twitter). He will require a stint on the 10-day DL.

It’s not yet clear how severe the injury is, but manager Craig Counsell indicated that he’ll need more than the minimum time away, as MLB.com’s Adam McCalvy tweets, the skipper says. Indeed, Guerra required crutches after undergoing his preliminary testing and treatment.

Even if it’s a relatively mild injury, it would be impossible to guess at the duration of Guerra’s absence. Milwaukee will surely exercise caution in bringing him back, and the timeline will no doubt be dictated by how he feels. Depending upon how well Guerra is able to maintain his arm strength while the calf heels, he may also require a rehab stint.

All said, there’s little in the way of long-term concern here, but it’s obviously disappointing to lose an Opening Day starter on the first game of the season. Guerra will remain one of the game’s most interest players to watch upon his return, when he’ll seek to continue the form that allowed him to compile 121 2/3 innings of 2.81 ERA ball last year as a 31-year-old rookie.