[skp]

I am now convinced that checkcalling the river on a blank is not the best move. LAG may well have called the turn raise with one pair and hoping to improve. While he will usually call the river with any crappy pair, he will fold often enough to make bluffing with AJ worthwhile (bluffing is even more correct where the river card is another high card like a Queen or a ten as the Lag with (say) a 6 will now be looking at 2 or 3 overcards out there).