What It Means:

Ryu has never been the hardest thrower, but that's still well off his usual mark. Roberts believes it's possible that Ryu is actually healthy and might be over-protecting his surgically-repaired left arm. He turns 30 next month and pitched just 4 2/3 major leagues innings in 2016, his first time on the mound since the 2014 campaign.

Ryu currently owns a 3.28 ERA, 1.21 WHIP and 20.6 strikeout percentage across 348 2/3 major league innings for his career (57 starts).