20-team league. Should I try to make improvements?

[Baseballer02]

Here's my roster, 20-team keeper league, 6x6 scoring(OPS and Holds).

C-Miguel Olivo
1B-Mike Sweeney
2B-Bret Boone
3B-Mike Lowell
SS-Angel Berroa
OF-Vlad Guerrero
OF-Andruw Jones
OF-Brad Wilkerson
Util-Travis Hafner
Util-Craig Wilson
Bench-John Buck
Bench-Omar Infante
Bench-Joe Crede
Bench-Adrian Gonzalez

SP-Tim Hudson
SP-Mark Mulder
RP-Billy Wagner
RP-Mariano Rivera
P-Felix Rodriguez
P-Ricardo Rincon
P-Tim Spooneybarger
Bench-Odalis Perez
Bench-Kelvim Escobar
Bench-Gil Meche
Bench-Gustavo Chacin
Bench-Chad Cordero

I'm thinking of trying to trade Rivera away for a nice 5th starter and decent hitter, should I do so?

[kentx12]

I dont believe I would trade Rivera. If you want to move a closer see what you can get for Wagner. Other than that I believe your team is pretty solid for a 20 team league.

[raiders_umpire]

that is a solid team for a 20 teamer.....i dont think i would move rivera as your offense is solid and your pitching staff aint bad at all....if u want to move a closer i would move wagner and get a SP in return....