the argument on the other side was that wins are of no value in determining the effectiveness of a pitcher and shouldnt be considered. as far as your "knowing how to win" theory, i have heard many prominent baseball men disagree with your statement including steve stone. i'm sure that mathematically you can run circles around him but my guess is that he might know a tad bit more about pitching in real life than you do. If you are using an outcome to measure the value of an individual player and as a predictor for future outcomes then you must ascertain how much influence that individual player has on the outcome. Pitchers have a significant influence over the outcome of a win, but so does their offense , their defense, and luck. If you look at ERA, you get a better idea of a pitchers value by eliminating their offense. If you look at DIPS, you get a better idead by eliminating their defense. If you look at component ERA, you get a better idea by eliminating some luck. If you look at ERA+ you get a better idea by eliminating park factors and comparing to the league. Obviously the game is not played in a vacuum, but that doesn't mean you have to value individual players using team statistics. Wins are a poor statistic in quanifying a pitchers value to a team because it is an outcome that a pitcher has a minority of influence upon. I dont understand why that is such a hard concept to grasp. Steve Stone was really good at knowing what pitches would be thrown in what situations, but other than that from all the comments he has made post-Cubs, he has shown that he is not the baseball genius we all thought he was. that's your opinion but i think it safe to say that he knows quite a bit more about pitching and pitchers by far than anyone on this board.