Need some advice/cc on my team...deep league

[gruns]

C Carlos Santana (Cle - C)
1B Adam Lind (Tor - 1B,OF)
2B Brandon Phillips (Cin - 2B)
3B Evan Longoria (TB - 3B)
SS Alexei Ramírez (CWS - SS)
OF Matt Kemp (LAD - OF)
OF Bobby Abreu (LAA - OF)
OF Curtis Granderson (NYY - OF)
Util Prince Fielder (Mil - 1B)
Util David Ortiz (Bos - Util)
BN Shane Victorino (Phi - OF)
BN Denard Span (Min - OF)
BN Gordon Beckham (CWS - 2B)
BN Grady Sizemore (Cle - OF) DL
BN Magglio Ordóñez (Det - OF)


SP Tim Lincecum (SF - SP)
SP Clayton Kershaw (LAD - SP)
RP Mariano Rivera (NYY - RP)
RP Brad Lidge (Phi - RP) DL
P Matt Garza (ChC - SP)
P Josh Beckett (Bos - SP)
P Hong-Chih Kuo (LAD - RP)
BN Koji Uehara (Bal - RP)

First post this place is the shit so much great info but anyway, only my second time doing fantasy baseball so i really could use some help figuring out how to improve my team. Leagues a standard yahoo head to head league with deeper rosters. Any constructive critisism is appreciated thanks