what do i need to do to improve my team

[big papi 06]

sp=beckett,bedard,capuano,penny,harden
rp=papelbon,valverde,ray,jenks,otsuka
c=barrett 1b=ortiz 2b=freel ss-lopez
3b=ensberg of=a.jones,wells,gomes,hawpe,swisher
mi=vidro ci=konerko util=atkins
bench: n.johnson, c.wilson, i. kinsler

[jondunc]

sp=beckett,bedard,capuano,penny,harden
rp=papelbon,valverde,ray,jenks,otsuka
c=barrett 1b=ortiz 2b=freel ss-lopez
3b=ensberg of=a.jones,wells,gomes,hawpe,swisher
mi=vidro ci=konerko util=atkins
bench: n.johnson, c.wilson, i. kinsler

I'd be interested to know the format, size of the league, etc. but that's a solid team with no glaring weaknesses in my mind.

[big papi 06]

5x5-wins,saves era,k's whip
runs,hr,rbi.sb,avg
8 team league
i am concerned about the sp of penny and bedard, thinking of picking up either bonderman or kazmir