Mariners starting pitcher James Paxton has been shut down due to inflammation in his throwing shoulder. An MRI revealed the inflammation and Paxton won't throw again until it's gone, which is expected to be five to seven days, per thenewstribune.com.
Paxton, 25, was excellent in two starts to begin the season (2-0, 2.25 ERA, 0.67 WHIP, 13 K, 12 IP), but a strained lat muscle sent him to the disabled list and he's been there since. In six career big-league starts, the 6-foot-4 lefty is 5-0 with a 1.75 ERA and 34 strikeouts in 36 innings.
Paxton made a rehab start for Triple-A Tacoma this past Saturday, throwing 62 pitches in three innings. He allowed three runs (two earned) on four hits, including three doubles, so he wasn't exactly as sharp as when he's fully healthy.
Considering Paxton won't be throwing for around a week, he'll then need to build up his strength after that before a minor-league rehab stint, so he won't be back to the Mariners for at least another few weeks.