What should I do with this team?

[yankeekd25]

10 Team Yahoo! H2H 6x6 Stats
I'm in First, but only by one game. My team doesn't hit HR's, and my players stopped driving in runs. Should I make some drastic changes or keep it the way it is?

My Team:
C- Martin
1B- Lee
2B- Utley
3B- Upton
SS- Hall
OF- Sizemore
OF- Holliday (Traded Crawford)
OF- Abreu
UTIL- Hafner
BN- Posada, Adrian Gonzalez, Aaron Hill
DL- Jim Thome

P- Oswalt
P- Webb
P- Sheets
P- Jenks
P- Nathan
P- Saito
BN- Gorzelanny, Hughes

[Wing_Kei]

Try to upgrade 3B, SS and SP by trading Upton, Hall, Posada (to a team in need of a catcher since you only need one) and Hill. Also since you only have only one utility spot try to trade either Hafner or Thome (his value is low right now so you may have to wait until he returns).