If it's overpair, you're up 60/40, before you've even considered your fold equity.

If it's a set, you're well behind and have no fold equity.

If it's a draw, he should now fold to a push straight away, as the best draw he can realisitcally have is J10[img]/images/graemlins/diamond.gif[/img] any other draw and he's getting horrible pot odds to call.

I'd say you're about 50/50, before you've considered fold equity, which should be very considerable, so push and pray.