Whether Hoffman and Castro work out in the Rockies org. is another question. As well known, Colorado is known for wrecking pitchers, due to altitude. Look at former Phillie Kyle Kendrick.. he is even worse in Colorado than he was in Philly. Or how about Eddie Butler, who has more BBs than Ks. Other disasters and injury blowups include(not just 2015):
Jordan Lyles, Chad Bettis, Tyler Matzek, Jhoulys Chacin, David Hale, Franklin Morales (although he's done a good job out of KC's pen), Rex Brothers, Christian Friedrich, Juan Nicasio(good thing he got on with the Dodgers), Tyler Chatwood, Alex White, Drew Pomeranz, Edwar Cabrera..
It's a very long list. If you're a flyball pitcher, don't go to Colorado. Not even the humidor helps anymore.. this organization needs MAJOR changes. Preferably getting pitchers that can pitch in altitude.