The river is the interesting part of this hand.

Without reads, I don't know. I think bet/fold, check/call and check/fold are all close.

Bet/fold is good if he folds a 9.
Check/call is good if he bluffs a busted FD more than 1:9.
check/fold is probably best. There's a good chance his FD probably backed into a pair.

thumbs up.