Welcome to our surprising starts series. Every week we'll be going over a few surprising starting pitcher performances around the majors to determine whether these starts were smoke and mirrors or something more. This week we saw the promotion of a big time pitching prospect, an unheralded spot starter come up big for the Cubs, and Wei-Yin Chen take his home/road splits to a new extreme. Michael Kopech's debut was cut short by rain on Tuesday, but that's okay since he held the Tigers to on[...]