WHIR - Where could I improve the most?

[seanpatin]

12-team 5x5 Rotisserie - Yahoo! Winner League

C - Russell Martin
1B - Ryan Howard
2B - Rickie Weeks
3B - Aramis Ramirez
SS - Miguel Tejada
OF - Bobby Abreu
OF - Grady Sizemore
OF - Torii Hunter
Util - Mark Teixeira
BN - Nick Swisher
BN - Willy Taveras

SP - Jeremy Bonderman
SP - John Lackey
RP - J.J. Putz
RP - Jason Isringhausen
P - Chad Cordero
P - David Weathers
P - Brett Myers
BN - James Shields
BN - Erik Bedard
BN - Matt Cain
DL - Jason Schmidt

I was thinking of trading Brett Myers, Chad Cordero, or David Weathers for a SP... maybe Daisuke Matsuzaka or Javier Vazquez. I am leaning towards Myers just because of his role right now being short-term possibly and his non-guarantee to be a SP or Closer. Cordero has been pretty horrendous though as well, except I expect him to keep improving as the year goes on and return to respectability. What are your opinions and where else could I look to upgrade?

[Noble Pabelbon]

Hunter won't put up numbers like this all year, so you could sell high on him for a solid SB-guy.