what actually made me fold was the river bet of all in which would have left me broke i got impression like you say he had a ok hand hand aand was trying to keep me in betting until river were i felt there was a high risk of him having a straight so i folded had if i would have felt that i could have afforded to lose the bet i might have gone for it.it was the difference between me finishing hand with 2k stack on a fold or 6k with a winning or 100 odd chips with a losing one.