The fact is, we are very thin at SF. We only have Kawhi Leonard and Stephen Jackson. If, as Jose says, Jackson plays a Robert Horryish PF, then we only have 1 SF. Danny Green can play some SF, but we are thinner there than we are with big men.
We have 3 PG's
Parker, Mills, and Joseph
We have 4 SG's
Green, Ginobili, De Colo, and Neal
We have only 2 SF (1 if Jackson plays PF)
Leonard and Jackson
we have 2 PF's (3 if Jackson plays PF)
Duncan and Blair
we have 3 C's
Diaw, Splitter, Bonner.
Our most needed position, therefore, is SF.
Dejuan Blair is worse than Matt Bonner!