OK.. villain is not a big fish was my read so far 
PokerStars - $0.02 NL (6 max) - Holdem - 5 players
Hand converted by PokerTracker 4
SB: 104.5 BB (VPIP: 33.33, PFR: 23.91, 3Bet Preflop: 4.35, Hands: 144)
BB: 175 BB (VPIP: 30.65, PFR: 22.26, 3Bet Preflop: 7.48, Hands: 323)
UTG: 82.5 BB (VPIP: 16.67, PFR: 8.70, 3Bet Preflop: 4.58, Hands: 424)
Hero (CO): 109 BB
BTN: 141 BB (VPIP: 18.76, PFR: 15.46, 3Bet Preflop: 3.37, Hands: 772)
SB posts SB 0.5 BB, BB posts BB 1 BB
Pre Flop: (pot: 1.5 BB) Hero has 5♦ 5♣
fold, Hero raises to 3 BB, fold, fold, BB calls 2 BB
Flop: (6.5 BB, 2 players) 8♠ 5♥ 4♦
BB checks, Hero bets 4 BB, BB calls 4 BB
Turn: (14.5 BB, 2 players) 6♠
BB checks, Hero checks
I think check here against this type of opponent at 2NL is OK.
It hits his range so hard (I'm not totally convinced though) and you have I think 20% equity
so when he re-raises when you bet here you kind of have to call.
River: (14.5 BB, 2 players) T♠
BB bets 9.5 BB
Call this? All possible draws in the world got there but what about 2P's, high PP's or a bluff?
Maybe calling/folding here is neutral EV I don't know.
What are your thoughts?
My thought at this moment.. calling OOP sucks.. you hardly win some even when you hit hard ♦
Spoiler
, Hero calls 9.5 BB
BB shows 8♦ 7♦ (Straight, Eight High)
(Pre 50%, Flop 18%, Turn 76%)
Hero mucks 5♦ 5♣ (Three of a Kind, Fives)
(Pre 50%, Flop 82%, Turn 24%)
BB wins 32.5 BB
