Mitchell spent 2019 in the minors, after seeing at least a bit of MLB action in each of the previous five seasons. Even with the caveat that 2019 was the most hitter-friendly season in the history of Triple-A baseball, Mitchell’s results weren’t good, as he posted a 9.41 ERA, 7.0 K/9, and 5.7 BB/9 over 44 innings for the Padres’ Triple-A affiliate in El Paso.
Chicago represents a fresh start for Mitchell, who has shown flashes of promise of his short big league career but has yet to deliver consistent results over his time with the Padres and Yankees. San Diego acquired Mitchell in the 2017-18 offseason, as part of a trade that saw the Padres agree to absorb the remainder of Chase Headley’s contract as the price for getting a controllable young arm in Mitchell. The gambit didn’t work out for the Padres, as Mitchell had a 5.42 ERA over 73 frames (starting 11 of 16 games) for the club in 2018.