Nl100: AKo river fold

[VinniePaz]

No-Limit Hold'em, $1.00 BB (4 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

Hero (UTG) ($101.50)
Button ($100)
SB ($121.10)
BB ($249.60)

Preflop: Hero is UTG with :kc, :ad
Hero bets $3.50, Button calls $3.50, 2 folds

Flop: ($8.50) :jh, :5c, :ks (2 players)
Hero bets $6, Button calls $6

Turn: ($20.50) :js (2 players)
Hero checks, Button bets $11, Hero calls $11

River: ($42.50) :9h (2 players)
Hero checks, Button bets $20, Hero folds

Total pot: $42.50
Villain: 19/15 (ipoker rakebackpro)

ich bin eine station und hasse es auf kleine bets zu folden. Aber standard fold gegen den?