The Yankees suffered through a bit of a rough patch in terms of pitching depth during the middle of 2018. You may have noticed! With Jordan Montgomery recovering from Tommy John surgery, Masahiro Tanaka dealing with a pair of strained hamstrings, and Sonny Gray immolating, the Yankees were forced to turn to inexperienced rookies throughout the summer.
For the most part, the experiment did not succeed. Two of the first arms up from the minors, Domingo German and Jonathan Loaisiga, showed promise but failed to limit runs at something resembling an effective rate.