weak overpair (nano limits)

Reads: cutoff will raise or re-raise preflop with strong hands and plays any pair aggressively post flop. UTG + 1 is very passive. He called AKs preflop on an earlier hand and check called it all the way to the river after a flop of AK5 rainbow. BB plays nearly anything and usually folds on the flop or turn.


PokerStars .05/.10
Hero holds [9h 9d] in MP2
Preflop: UTG+1 calls, HERO raises, MP3 posts .08 ( all-in ), CO calls, BB calls, UTG+1 calls
Flop (11 SB): [6h 2h 5d]
BB checks, UTG+1 checks, HERO bets, CO raises, BB & UTG+1 call, HERO calls.
TURN: (10.1 BB) [Kd]
BB checks, UTG+1 checks, HERO ??? (I checked and called CO bet), BB folded, UTG+1 calls.

River [2s] UTG+1, CO, HERO remain
UTG+1 checks, HERO ??

I wasn't too worried about the cut-off on the turn but was a little concerned about UTG+1 hitting a K.
A2, A5, A6 were reasonable holdings for the CO so the 2 on the river concerned me as well.