still struggling with some minor nuances between tournament play and ring play, but I thought I would post this just to see what people think ...

PokerStars $50NL (8 handed)

SB ($29.10)
BB ($27)
UTG ($62.50)
UTG+1 ($48.75)
MP1 ($96.50)
MP2 ($54.25)
CO ($49.25)
Staresy ($73.45)

Preflop: Staresy is Button with 8 8
3 folds, MP2 calls $0.50, CO raises to $2, Staresy calls $2, SB calls $1.75, 1 fold, MP2 folds.

Flop: ($7) K 5 2
(3 players)
SB checks, CO checks, Staresy bets $4.5, SB raises to $9, CO folds, Staresy ...

pretty much a clear fold to me, but do I ...
... regret betting the flop?
... regret not re-raising pre-flop given I have position? ... dont think so, but thought I would ask u ring-game bods to help a predominant SnGer out.