Catchers
Buster Posey
Eli Whiteside
Infielders
Aubrey Huff
Mike Fontenot
Ryan Theriot
Emmanuel Burriss
Brandon Crawford
Pablo Sandoval
Brett Pill
Outfielders
Melky Cabrera
Angel Pagan
Nate Schierholtz
Gregor Blanco
Starting pitchers
Tim Lincecum
Matt Cain
Madison Bumgarner
Barry Zito
Bullpen
Brian Wilson
Sergio Romo
Jeremy Affeldt
Javier Lopez
Santiago Casilla
Guillermo Mota
Clay Hensley
Eric Surkamp (until Ryan Vogelsong returns)
The only one I'm not confident in is Surkamp, as there's a chance that the Giants will keep Vogelsong away from the DL. But they don't need a fifth starter until the middle of April, yet they might need some mop-up innings from someone. There's still a chance for the official minor-league relief prospect of McCovey Chronicles, Danny Otero. Seven innings this spring, no walks, seven strikeouts! Danny Otero!
I'm also confused by the recent spate of Joaquin Arias mentions, but I suppose he could be the fill-in if the Giants really do trade Theriot or Fontenot.
I still don't buy the idea that the Giants are going to keep Brandon Belt up as some sort of super-utility guy who can pinch-hit. And I don't see them starting him over Aubrey Huff (totally unlikely) or Nate Schierholtz (fairly unlikely).
And while I want to believe that Sanchez could be the backup catcher, I don't see Bochy taking Whiteside to a place that has a huge field where he can run around and play with other Whitesides to his heart's content. Not just yet. Sanchez hasn't forced the issue that much.