After today's strong start against the Minnesota Twins, Duffy has everything he needs to be a true contender for the American League Cy Young award.
Whether you're a believer in sabermetrics or not, Duffy has it all.
After today's start, Duffy is 11-1 with a 2.66 ERA, 3.21 FIP and a 3.75 xFIP over 138 2/3 innings pitched this season. According to FanGraphs, he has been worth 3.2 wins above replacement. That is good for eighth-highest in the league and certainly good enough to garner some conversation, especially considering this year's "weak" class for the distinction.
Going with the more conventional stats, Duffy ranks second in the AL in ERA, first in WHIP and first in strikeout-to-walk rate.
He also ranks second in ERA+, third in FIP+ and ninth in xFIP+, adjusting his marks to park and league factors and putting it on a sliding scale where 100 is considered league average.
Perhaps the most fascinating thing about Duffy is that he started the 2016 season in the bullpen. The 27-year-old did not make his first start of the season until May 11 and didn't pitch past the sixth inning until Jun. 27.
Duffy had Tommy John surgery in 2012 and had not been extremely successful as a starter since, especially in 2015 when he posted a 4.35 ERA and a troubling 90-51 K/BB ratio in 128 1/3 innings pitched.
Due to injuries to Kris Medlen and Chris Young, Duffy got his first start of 2016 in mid-May and has not looked back.
From then on, Duffy has made 19 starts, pitching 120 2/3 innings. He's 11-1 with a 2.61 ERA and a 126-24 K/BB ratio. The Royals have won 16 of his 19 outings, including the last 11 in a row.
His best outing came against the Rays just a few weeks ago. Duffy went eight innings, allowing just one hit and one walk with no runs. He struck out sixteen. Yes, sixteen. That's dominance.
It is amazing how much of a transformation Duffy has made just over the course of the past calendar year, going from failed starter to reliever to spot starter to great starter to. . .Cy Young award winner? I'm all for it.