Because it’s not an off-day without a little bit of bad news, the Mariners made this announcement today:
It’s been no secret that Marco, after a sterling start to the season, has struggled of late. Some suggested he might be suffering some arm fatigue, barely two years removed from his Tommy John surgery; his 145 innings pitched this season are more than he’s pitched in a single professional year since 2014. From April to July, Marco posted a 22% K-rate with an FIP of 3.34 and a .253 average against. In August, his K% has fallen to just 17% while his FIP has ballooned to 4.