The Mariners recently placed veteran right-hander Hisashi Iwakuma on the 10-day disabled list with shoulder problems, and now they reportedly have a time-frame for his recovery:
More bad news for Mariners rotation: Hisashi Iwakuma will be out 4-6 weeks with right shoulder inflammation. One of 4 starters on DL.
— Greg Johns (@GregJohnsMLB) May 13, 2017
That's bad news, especially for a team with, yes, 80 percent of the planned-for rotation presently on the DL. Speaking of which, right now that rotation loosely consists of Ariel Miranda, Yovani Gallardo, Chase De Jong, Christian Bergman, and Ryan Weber.
As for Iwakuma, the 36-year-old has pitched to a 4.35 ERA and 1.33 K/BB ratio after six starts this season. For his MLB career, he's got an ERA+ of 111 across parts of six seasons, all with Seattle.