An over pair. Possibly but why limp with an over pair if he was aggressive? a set possibly but why would he reraise. You would think he would flat and raise turn with one card to go if he put you on a flush draw. Opponent on a draw. Not likely because he is not getting the odds to push here. Why do you think he raised you in the first place. In my opinion he is holding the 910 more often then not. Which still gives you 9 outs for a flush. And one of those being the nuts. But in all reality