Mahle (shoulder) threw a bullpen session and a couple simulated innings Monday, Do-Hyoung Park of MLB.com reports.
Mahle tossed a bullpen session Friday without issue, and he was able to do the same a few days later. When asked about his status afterward, Mahle responded, "I'm pretty optimistic that I'll be good the rest of the year." That bodes well both for his chances of being activated from the injured list Friday when first eligible and his fantasy prospects the rest of the way.