How can I improve my team?

[sgordon77]

12 team H2H league
Hitting -- Runs, HR, RBI, SB, Average
Pitching -- Wins, Saves, Strikeouts, ERA, WHIP

My Team:
C V. Martinez WW
C M. Piazza WW
1B A. Pujols *
2B R. Weeks WW
2B J. Vidro WW
3B M. Mora *
SS M. Young T
OF C. Patterson *
OF G. Sheffield *
OF A. Dunn *
Util D. Wright T

SP R. Oswalt *
SP C. Zambrano &
SP B. Sheets T
SP B. Zito WW
SP C. Capuano WW
SP J. Westbrook WW
SP J. Bonderman T
RP E. Guardado *
RP C. Cordero *
RP D. Turnbow *
DL B. Lyon WW

* -- Drafted
WW -- Waiver Wire
T -- Traded For

I'm in first place, but I can always improve.

Most weeks I win all the offensive categories except for SB and sometimes average.

For pitching, I usually win Saves, ERA and WHIP

Trades I've made

May 3:
I gave: D. Ortiz
I got: B. Sheets and D. Wright

June 26:
I gave: J. Kent and N. Perez
I got: M. Young and J. Contreras

June 29:
I gave: Y. Brazoban
I got: J. Bonderman

I usually do well in the regular season, and my team tanks in the playoffs. How can improve my team?

[abstractpoet]

i would try to move Bonderman for another pitcher who would get you more wins. Maybe a Matt Morris type, if you can get him. Do a package deal if you don't think the other guy'll do it straight up.