10-20NL deep with the underfull

[anduril]

Villain has $4200, I cover. He is unknown to me and I was many-tabling so I didn't see how he got his big stack.

8 handed. I open UTG with 66 to $80. Villain calls from CO.

6 Q 7r

I bet $180 (standard for me), he calls without thinking much.

turn: 7, no flush draw.

I bet $290, he raises to $695...