The numbers only prove that you're wrong with respect to Wuertz's ability in 2005 to induce swings at pitches that crossed the plate outside of the zone. They do not however necessarily say anything about whether he's hurt more of less than others by control issues. Because, if you think about, getting hitters to swing at pitches outside the zone requires that you're able to trick them into thinking that the pitch will cross the plate inside the zone. Therefore, even a slider that drops out of the strike zone (and would, if taken, be a ball) can be representative of good control. So, statistically, it's extremely difficult to say whether or not Wuertz is more or less dependent upon other pitchers upon good control. Theoretically, at least, the better your stuff the harder it is to hit, regardless of where you locate it. Theoretically. And Wuertz's stuff is pretty good. Nay, extremely good. Anyway, this conversation is pretty irrelevant, because I think it's entirely clear that if Wuertz wants to succeed, he has to throw strikes, or at least pitches that hitters think are strikes. Limiting the number of walks he allows, if he can maintain the rest of his game, will undisputedly make him just flat out nasty. But there's something to be said for the observation that because Wuertz relies on hitters chasing sliders out of the strike zone to rack up his dominating strikeout numbers, and so throws sliders out the strike zone, pitches that would be balls were they not swing at, he's more likely than most to walk hitters, especially if they're patient. It would seem to make sense then that Wuertz would be able to be effective as a closer using the same logic that some have used with Dempster. Batters are less patient when save situations come about, are more likely to chase pitches, which plays into the strengths of Wuertz(and Dempster for that matter). Continuing to think out loud, if Wuertz shows some ability to not walk people and continue the great K rate, along with the Cubs falling out of the race, what would Dempster bring at the deadline(assuming he hasn't fallen off the face of the earth)?