Effective stacks are 20 BB.

Hero looks down at



and opens for a standard raise (3x BB) on the button.

Villain on the BB calls.

Flop (7BB)
:Ad:

Villain checks. Hero bets 7 BB. Villain re-raises all-in to 17 BB.
Hero has to call 10 BB into a 30 BB pot (3 to 1). He calls.

So how was hero's play?