Effective stacks are 5k.
MP opens to 80, 2 calls, SB calls, I call with 8
8
.
Flop ($400): 8
4
2
PFR bets $160, 2 calls, I flat.
Turn ($1040): J
SB donks for $300, I raise to $1000, he calls, everyone else folds.
River ($3040): 6
SB thinks for 20 seconds then bets $2000
Villain is a thinking rec player that plays way too lose pre but kind of fit or fold postflop from what I've seen. Not a huge sample size so he could still be capable of anything.