Well I'm a total donkey, so treat this more like a question than an opinion [img]/images/graemlins/smile.gif[/img]

Wouldn't his bets make sense if he was holding 67(s) or pocket 8's?

Flop he picks up a straight draw or sees just one overcard to his pair so he bets out a bit testingly.

Turn he makes his straight or set but also sees the draw for a bigger straight and/or flush so he bets out for value and to not give pot-odds for any flush/straight-draws.

Ts on river makes both a flush and a bigger straight possible, so he makes a blocking bet.

Or..?