"Lets pretend that Bush continued to be a hot pitcher and the Crew took the World Series. He would be a big game pitcher." The correct thing to say is that Bush was a big time pitcher in the 2008 playoffs. To say "is", implies that his 2008 performance suggests that he should continue to perform better than his career norms in important games. An innate skill. I don't think that would be a very fair assumption. I think baseball fans do not always understand how important the is/was distinction is. Bill Hall was clutch in 2005. Player X has killed this team, in the past. Pitcher Y has been great on the road this year. Descriptive, not necessarily predictive. "I think that if the phrase "Big Game Pitcher" is outlawed, that the phrase "mid-season acquisitions are only worth a win or two at most" probably will be as well." If that's aimed at my CC estimate (which seems like a pretty fair assumption), that's a a pretty big distortion of my conclusions. Here's the post: http://rluzinski.blogspot...hia-be-worth-in-wins.html First of all, I said "worth closer to 2.5 wins". Second, as I tried to explain in the original CC thread, there are all kinds of statistical noise built into this kind of estimates. If I EVER gave the impression that I knew exactly how many wins he would net the Brewers in 2008, I apologize. I didn't think it needed to be said as I most certainly can not see into the future. Even if god came down from the heavens and shared with me every matchup CC would see and every probability of success associated with it, it would still just be an estimate. Play the season twice and you might get 2 wins the first time and 4 wins the next. But play the season a million times and this is what we would expect on average. But as far as I know, god hasn't whispered into my ear regarding this topic, so I have to fight statistical error AND the error of my assumptions. I used a 3.0 ERA assumption. Should I have used something lower? I don't think so but maybe? I've never seen statistical evidence of a "changing leagues" bonus but maybe there is one? Not one that's strong enough to come up with an expected CC ERA of 1.65, right? Should I not have assumed that he would be replacing a 4.75 ERA pitcher? At the time, it was a tough call who he would even be replacing. Considering the arms the Brewers had in the bullpen, I think 4.75 was reasonable. Average 7 IP a start? He ended up averaging 7-2/3 (which is amazing). I used 15 starts, not 17. No way to know that, either. You use the information you have at the time, just like everyone else's estimates evidently did. Is this just a misunderstanding or what?