Most players will check back 9T-9K but he could possibly turn them into bluffs. I find it unlikely he has an 8 here. Does he have enough bluffs in his range? He could do this with 7T, 67, TJ, in his bluff range and A9, 99, 44 in his value range...not to mention maybe a few oddball hands I think most players will bet small for not just thin value but with nuts as well here because they know the A is a scare card. I think I call.