Who are the best players in the N.B.A. who are more or less equally good at 2 positions?
I'm less interested in the wing group (Kobe, Pierce, Joe Johnson at the 2 or 3) and more interested in the rarer players who are highly capable at both the 3 and the 4.
PG's who can play the 2 as well are rather self-evident (though there can be disputes), and centers and power forwards interchange with great frequency (more disputes when it's your team involved and you're discussing lineups, roster, etc..)
So how about the combo 3 and 4 players. We used Posey at the 3 and 4, but he's a much better 3 unless the other team is small.
Who's the best player in the league who you could put at either position. Durant? Josh Smith?