villian 27/7/0.65. was playing tight passive. its small pot marginal spots like this where i think i have leaks. anyway after some thought i think maybe betting turn is a better play as it would give more info to his strength and also gain value from med. pp's in this spot. on the river though what are passive players betting here that i beat. do i have value in calling? comments on my play from any street are appreciated

PokerStars No-Limit Hold'em, $0.10 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

Button ($13.10)
SB ($3.35)
BB ($7.50)
UTG ($9.85)
Hero (MP) ($9.40)
CO ($11.95)

Preflop: Hero is MP with K, K
1 fold, Hero raises to $0.40, 2 folds, SB calls $0.35, 1 fold

Flop: ($0.90) 9, A, A (2 players)
SB checks, Hero bets $0.50, SB calls $0.50

Turn: ($1.90) J (2 players)
SB checks, Hero checks

River: ($1.90) Q (2 players)
SB bets $0.90

Total pot: $1.90