With Splitter and Duncan at C and PF there are several lineups could be elite defensively with Parker, Leonard, Jackson, Green, and Ginobili in the mix for the other two spots.
We get a full dose of Bonner instead.
We also have the makings of an elite smallball defensive lineup.
Only thing that i can think of is that Splitter doesn't know how to play sets where he is not the primary bigman but how ing hard can it be to stand outside the piant under the basket? I wish he would at least allow Splitter to try and defend people on the perimeter. He has Blair do it.