Starting Pitchers
SP Barry Zito
SP Tim Hudson -> Joe Blanton (Obvious downgrade, but Hudson has been injured and missed time every year except for 2001. But still, Blanton is having a hell of a year so far, his ERA is in the mid 2's.)
SP Mark Mulder -> Danny Haren (Because of Mulder's mid-season meltdown in 2004, the shoes Haren has to fill aren't as big as the media plays them up to be.)
SP Rich Harden (Harden was one of the best pitchers after the All-Star break last year, and has picked up where he left off.)
SP Mark Redman -> Kirk Saarloos (Redman couldn't pitch at home, and Saarloos proved himself by filling in for Hudson while he was injured last year, covering 5 or 6 of his starts and only losing 1 game.)
Bullpen
CP Arthur Rhodes -> Octavio Dotel
RP Justin Duchscherer
RP Chad Bradford
RP Chris Hammond -> Kiko Calero
RP Jim Mecir -> Juan Cruz
RP Ricardo Rincon
RP Justin Lehr -> Huston Street
Infield
3B Eric Chavez
SS Bobby Crosby
2B Mark McLemore -> Mark Ellis
1B Scott Hatteberg
Util Marco Scutaro (Scutaro has learned patience in the off-season and is a much better hitter. 3 more walks and he'll match last year's season total.)
Util Eric Karros -> Nick Swisher
C Damian Miller -> Jason Kendall
C Adam Melhuse
Outfield
CF Mark Kotsay
LF Eric Byrnes
RF Jermaine Dye -> Nick Swisher (Dye was a bust, even though he's a rookie, I wouldn't call Swisher a major downgrade. He's also younger and is a switch hitter.)
OF Bobby Kielty (Kielty is not hurt this year and is hitting like he's capable of again.)
OF Billy McMillon -> Charles Thomas (Billy Mac hit about .180... Anybody is an upgrade.)
Really not seeing how this team got worse.