What It Means:

There was nothing known about Duke dealing with elbow trouble, so this is a shocker. His arm apparently couldn't keep up with the career-high 81 appearances he just turned in this season, and now he'll be sidelined for all of 2017 before hitting free agency the following winter.

Duke's 2.36 ERA was his best since 2012, while his 3.52 xFIP was an improvement on his 4.15 career-average. He recorded a 26.4 strikeout percentage and 1.26 WHIP across 61 innings this past year.