Hmmm. I wouldn't bet the farm on that one. If the Cubs somehow won the next two games, I doubt that the D-Backs would risk their season on a rookie pitching against Zambrano, IN Chicago. My guess is if the Cubs are up 2-1, Webb is pitching on Sunday. If Arizona is up 2-1, Webb pitches on Tuesday in Arizona. It would be real nice for the Cubs to be up 2-1 in this series rather than down 2-1 come Sunday. I think it would be a terrible decision for the Diamondbacks if they moved Webb up. He has never pitched on 3 days rest in his career, and the Diamondbacks have no real reason to move him up like the Cubs do. The difference between Micah Owings and Doug Davis is a lot smaller than the difference between Ted Lilly and Jason Marquis. The D-Backs would be giving themselves less chance of winning the series just to give them a greater chance of winning game 4. I hope they make that decision, but I doubt they will. But if the D-Backs are facing elimination, the difference between Webb on short rest versus Owning/Davis can be quite significant. Personally, the only way I see Arizona NOT using Webb in game four is if they're up 2-1. That way they can hope to clinch the series at Wrigley with Ownings/Davis or use Webb on regular rest at home. They are facing elimination in game 5 too. What does it matter if it helps them win game 4 but causes them to have a smaller chance of winning the series? It's better to give yourself the best chance to win the current game and hope you can cobble something together in the next one. If you don't win this game, it doesn't matter what you have saved up for game 5 (or, in the Cubs case, what ace you have saved up for game 4 :x). Why is it better though? Basically you're taking a known (Webb pitching well in game 5) and turning it into an unknown. Your chances of winning game 4 might be better, but if you can't win game 5 it doesn't matter. Basically, you have two games left. You can pitch Webb on short rest and Davis, or Webb on regular rest and Owings. Which is more likely to get good performances out of both? IMO, the second. The order of the games doesn't matter. Why is Webb pitching well in Game 5 a "known" - he's never had a bad game on an extra day of rest? If Webb pitching on short rest in Game 4 will (certainly or VERY likely) result in a bad outing and/or loss, then you save him for Game 5. That would be true if the Dbacks were thinking of pitching him tonight. But I don't think that's nearly the case. Especially since the alternative is an extra day of rest - which, in some cases, messes up a pitcher as much as short rest. Is he more likely to pitch well on 5 days rest than 3? If he's never pitched on 3 days rest, how can you possibly know (or even have an educated guess)? I have to figure a team would rather have their ace in a must-win Game 4 and their #2 in a must-win Game 5 than their #4 in a must-win Game 4 and their ace in Game 5. Especially when your ace is the best pitcher in the league.