50NL: straight on river with paired board

[jimmy44]

willemus was running at 43/9.5/4 (50 hands)
No specific reads on opp.
Shoud I have raised flop with an OESD?
On the turn I felt I was betting him (even if a bit afraid of 97).
Now the board pairs on river and I'm bet by a set/ful house and 97 ...
would you call?

EverestPoker Game #2392409938: Table Berlin-31 - $0.25/$0.50 - No Limit Hold'em - 22:38:44 - 2007/11/19
Seat 1: Hero ($53.75)
Seat 3: witte111 ($48.25)
Seat 4: Benj86 ($74.00)
Seat 6: kedud ($33.43)
Seat 7: legend81 ($37.50)
Seat 8: willemus ($44.79)
Seat 9: Pullings ($7.50)
Seat 10: docb ($49.50)
docb posts the small blind of $0.25
Hero posts the big blind of $0.50
The button is in seat #8
*** HOLE CARDS ***
Dealt to Hero[7 3]
witte111 folds
Benj86 folds
kedud folds
legend81 calls $0.50
willemus calls $0.50
docb folds
Hero checks
*** FLOP *** [6 5 8] (pot: $1.75)
Hero checks
legend81 checks
willemus bets $0.50
Hero calls $0.50
legend81 calls $0.50
*** TURN *** [6 5 8] [4] (pot: $3.25)
Hero bets $2.00
legend81 folds
willemus raises to $9.25
Hero calls $7.25
*** RIVER *** [6 5 8 4] [8] (pot: $21.75)
Hero checks
willemus bets $12.50
Hero ???

[wufwugy]

You're pretty much only afraid of 97. He's not raising turn with a set. He's a donkey with too high of an af to fold river. Call and thank him for slowplaying his flopped straight.

Don't lead flop. One card oesd sucks in limped pots. I guess you can call flop since your immediate odds are so good, but if he bet more just dump it since you're not getting much action from worse when you improve.

[jimmy44]

Sometimes I've seen donks min raising sets in this situations.
However, I agree that I should have called ...