Ok...this seems like a str8 fwd lucky catch by me on the turn (and very profitable at that). However, my question is how you determine whether you call here as opposed to muck?

I felt it was about as likley this guy was drawing as the chance that he had it. Comments welcome...

Party Poker No-Limit Hold'em, $ BB (10 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

saw flop|saw showdown

BB ($7.20)
UTG ($49.25)
UTG+1 ($25.90)
UTG+2 ($53.65)
MP1 ($22.40)
MP2 ($49.50)
MP3 ($9.19)
CO ($18.55)
Chicago_Kid ($149.84)
SB ($47.35)

Preflop: Chicago_Kid is Button with 7, 7. SB posts a blind of $0.25.
4 folds, MP2 calls $0.50, 2 folds, Chicago_Kid raises to $2.5, SB (poster) calls $2.25, 1 fold, MP2 calls $2.

Flop: ($8) 9, J, 2 (3 players)
SB bets $2, MP2 folds, Chicago_Kid calls $2.

Turn: ($12) 7 (2 players)
SB checks, Chicago_Kid bets $8, SB calls $8.

River: ($28) 5 (2 players)
SB checks, Chicago_Kid bets $9, SB calls $9.

Final Pot: $46