The Cubs were 4 wins below their pythagorean W-L record, so this suggests they were fairly unlucky last year (along with being bad). A season of Izturis/DeRosa with some spot starts by Theriot will probably outperform a half season of Walker/Cedeno and then Cedeno/Izturis and Cedeno/Theriot. Cedeno was a black hole and Walker was really pretty mediocre with the Cubs last year. Lee played only 50 games last season. The Cubs could easily get 100 more games out of him, meaning 100 less games of Walker/Mabry/Nevin troika. Cedeno had an OPS+ of 53 last year. Mabry and Perez each had over 200 ABs and each had an OPS+ of 53. Now you're looking at a bench with Theriot and Ward, who will easily be better than the trash last season. Barrett played less than 2/3 of the games in 2006. Murton can be expected to improve a little bit from last season. Pitching: You hopefully replace Rich Hill's crappy early season games with average to good games. He pitched only 16 games last year; this year if he's healthy, he'll double that total. Marmol and Guzman were flat-out bad; no Cub starter is likely to be that bad this year. Marshall was also bad; Marquis probably won't be that bad this year, and if he is, he'll be replaced in the rotation. Dempster might be better this year. No Glendon Rusch, less Novoa, no Williamson, more Wuertz. Wood will probably be good in whatever innings you get out of him from the pen. Prior might not give you much, but he'll do better than 9 atrocious starts. At the worst, I'd expect him to not pitch, in which case he'd still be better than last year. I don't think the Cubs are going to be great, but it's easy to see a lot of ways in which they can improve over last year. Mostly, I think, the Cubs have taken most of the worthless pieces from last year (Cedeno, Mabry, Neifi, Guzman, Marmol, Rusch) and replaced them with players who will likely do significantly better (with the exception of shortstop, where Izturis will probably be only marginally better than Cedeno was). That, along with hopefully a full year from Lee and the large increase in production from Pierre to Soriano, is a reason that an improvement of 15-20 games is not unreasonable.