As we've seen with the Sox arms, things can go south in a hurry with injuries and lack of development. The Sox guys were farther away than the Detroit guys are, but you never know what happens once they get up. In late 2017, the Sox had
Rodon(chronically injured)
Giolito(TOR SP)
Lopez (bust)
Kopech (Injuries/work in progress)
Cease(Work in Progress)
Hansen(bust)
Dunning(injuries/work in progress)
And out of all of them, only one has emerged so far as even a decent SP, and it's the guy nobody thought would.