well, i haevnt read any other replies my heres my opinion as i have seen this situation often.A tight older gentleman will normally check their top pair on the flop if they dont have a kicker to raise with. Most likely he had top pair with a low kicker, second top pair using the tight image to force a fold, or he spiked two pair on the turn.If there are no flush draws and it doesnt seem as if anyone is drawing to a straight, I would go ahead and either try to control the pot size by just calling hoping he will make a small bet on the river giving you good odds to call, or he might even check h