Fun time on the river

[Miffed22001]

Opp is 35/3 friday night drooler
I have a super aggro image from stealing blinds 100% of the time and raising this guy light every time he limps.
River is not a spot i want to fold on against this guy

No-Limit Hold'em, $1.00 BB (9 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

CO ($31.50)
Button ($102.50)
SB ($100)
BB ($17)
UTG ($92.70)
UTG+1 ($36.20)
MP1 ($170.95)
MP2 ($292.75)
Hero (MP3) ($110.45)

Preflop: Hero is MP3 with K, 9
3 folds, MP2 calls $1, Hero raises $4, CO calls $4, 3 folds, MP2 calls $3

Flop: ($13.50) 4, 9, 8 (3 players)
MP2 checks, Hero bets $9.50, CO calls $9.50, MP2 calls $9.50

Turn: ($42) 9 (3 players)
MP2 checks, Hero bets $20, 1 fold, MP2 calls $20

River: ($82) 2 (2 players)
MP2 bets $90, Hero ??

[ATOTHEC101]

I fold, this is a backdoor flush or a boat alot, you effectively have a bluff catcher as he doesnt bet the river this big with a worse 9.

[mediumhand]

are u kidding me ? snap it
preflop iso sizing is bad and tbh unless he folds to every cbet i dont liike the hand ur doing it with.