10-20 blind play

[gomberg]

This is a goofy hand. SB has $1300, I cover.

folded to him. He's been raising every time he's sb and it's folded to him. I've been calling most pots and floating, taking it away a lot of the time on the turn, or raising flop and he folds. In general I'm playing nittish though...

folded to him in sb, he raises to $60, I call in BB w/ Tc6c.

Flop ($120) JcTh5c. He bets $90, I decide to raise to $325 and he quickly calls...

Turn ($770) Ad. He checks. I check (comments on this?)

River ($770) Ac. He times down and pushes for $920... wtf? Easy call w/out any type of read on this play?