Play a Hand With the Masters #3 River

[Lloyd]

This is Part 4 of Play a Hand with the Masters #3. If you haven't already responded to Part 1, Part 2, and Part 3 you should do so first.

Setup
$650 PokerStars Qualifier for the PokerStars Carribean Adventure (PCA)
9-Handed
Blinds 10/20
Hero is Strassa
No reads on villain

Stacks
Hero (CO) t2540
BB t3245

Pre-Flop
All fold to hero who has 7[img]/images/graemlins/spade.gif[/img] 5[img]/images/graemlins/spade.gif[/img] and raises to t80. Button and SB fold. BB calls t60.

Flop
Pot: t170

Flop: 7[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/heart.gif[/img] 9[img]/images/graemlins/heart.gif[/img]

BB checks. Hero bets t140. BB raises to t300. Hero calls t160.

Turn
Pot: t770

Turn: Q[img]/images/graemlins/spade.gif[/img]

BB checks. Hero bets t520. BB calls t520.

River
Pot: t1810

River: 4[img]/images/graemlins/heart.gif[/img]

BB checks. Action is on the hero.

River Questions
1) What do you think the villain has?

2) Do you check or bet (and if so, how much)? If you bet anything less than all-in, what's your plan if check-raised? Obviously explain your reasoning for your action.