Not long ago, the thought of Dallas Keuchel in a Diamondbacks uniform would have been highly implausible. This is the 2015 American League Cy Young winner after all, and a five-time All Start. From 2014-2020, Keuchel had 81 wins - 12th most in the majors - and an ERA+ of 125, in the top 20 among those with 500 IP over that time. He had signed a three-years, $55.5 milion contract with the Chicago White Sox in December 2019, and the first year and a half of it went more or less as expected. But, suddenly, the wheels fell off.