Studies have shown that on average, starters who get rocked early do not perform worse than expected going forward. I'm sure many will find that hard to believe but it's true. If Wolf has his velocity (which isn't saying much) and nothing else seems wrong with him physically, I don't think we should expect him to continue pitching below his normal expectations. And since his normal expectations (4.24-4.5 ERA?) are better than any of the long relief guys we have available, so he's probably our best bet. That's my reasoning at least. And there's been a semi-recent trend (5-10 years) to NOT yank SP when they struggle early, so I think the league generally agrees. Of course, SP pitcher performance degrades as the game goes on, so a 4.5 ERA SP might perform more like a 5.0 one in the 5th. For that reason, I don't have an issue pulling a 3/4 SP type guy like Wolf after 75ish innings.