Pre is standard for me from BTN but is worse offsuit K I open. Two pair on the flop with all sorts of draws I think bet is mandatory. Turn is a blank so I plan on continuing. Get min raised which normally on the turn is very strong but what can he have? Straights and sets surely raise that flop when I bet multiway on a board that drawy.

River then is not ideal and he barrels with 'call me' 50% sizing. Just call it off?

PokerStars - $0.10 NL (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4: http://www.pokertracker.com

UTG: $10.30 (VPIP: 25.98, PFR: 21.18, 3Bet Preflop: 2.67, Hands: 209)
CO: $3.31 (VPIP: 89.29, PFR: 28.57, 3Bet Preflop: 0.00, Hands: 29)
Hero (BTN): $11.69
SB: $10.99 (VPIP: 10.34, PFR: 3.45, 3Bet Preflop: 0.00, Hands: 29)
BB: $9.72 (VPIP: 37.93, PFR: 24.14, 3Bet Preflop: 9.09, Hands: 29)

SB posts SB $0.05, BB posts BB $0.10

Pre Flop: (pot: $0.15) Hero has Kc 9s
fold, fold, Hero raises to $0.20, SB calls $0.15, BB calls $0.10

Flop : ($0.60, 3 players) Js 9c Ks
SB checks, BB checks, Hero bets $0.40, fold, BB calls $0.40

Turn : ($1.40, 2 players) 6d
BB checks, Hero bets $0.95, BB raises to $2.00, Hero calls $1.05

River : ($5.40, 2 players) Td
BB bets $2.60,?