Villain is a nit over small sample, 7/7/10 (3bet) over 32 hands. This was villain's first blind he had defended.

PokerStars - $0.10 NL (6 max) - Holdem - 6 players
Hand converted by PokerTracker 4

MP: $4.00
CO: $10.34
BTN: $12.36
Hero (SB): $10.35
BB: $8.80
UTG: $4.10

Hero posts SB $0.05, BB posts BB $0.10

Pre Flop: (pot: $0.15) Hero has Q Q

fold, fold, fold, fold, Hero raises to $0.30, BB calls $0.20

Flop: ($0.60, 2 players) 2 7 5
Hero bets $0.30, BB calls $0.30

Turn: ($1.20, 2 players) 9
Hero bets $0.85, BB calls $0.85

River: ($2.90, 2 players) 4
Hero checks, BB bets $1.70, Hero ???

Is checking the river a mistake here? I'm not sure what part of a nits range allows him to continue on flop and turn; sets and maybe TT-JJ is all I can think of.

I guess he could have a flush, although I think he would raise on the turn a good % of the time.

I think I have put myself in a bad spot when I didn't need to. I think b/f is a much better option, I'm just never fully comfortable betting 3 streets OOP w/ an overpair. Probably something I have to work on.