Who folds this river?

[Ryno]

After thinking about it some more, maybe he could play AcKc this way, but I doubt it. On the other hand, it's so hard to put me on J9 given my mega-nit image that he probably doesn't think a paired board helps him, so he'd check to me with AA/KK. Elsyium mentioned pair plus draw, although the Jack was a club and he probably isn't 3betting Ac9c into a field.