Why, God, WHY?!

PokerStars No-Limit Hold'em, $0.02 BB (6 handed) - Poker-Stars Converter Tool from FlopTurnRiver.com

MP ($2.39)
Hero (CO) ($5.84)
Button ($7.89)
SB ($7.16)
BB ($7.20)
UTG ($2.54)

Preflop: Hero is CO with 6♣, 2♠
UTG bets $0.08, 2 folds, Button calls $0.08, SB raises to $0.28, 1 fold, UTG raises to $0.80, 1 fold, SB calls $0.52

Flop: ($1.70) A♦, 9♦, 5♥ (2 players)
SB checks, UTG bets $0.84, SB raises to $1.68, UTG raises to $1.74 (All-In), SB calls $0.06

Turn: ($5.18) 3♦ (2 players, 1 all-in)

River: ($5.18) 2♦ (2 players, 1 all-in)

Total pot: $5.18 | Rake: $0.25

Results:
SB had 2♥, 9♠ (two pair, nines and twos).
UTG had K♥, K♠ (one pair, Kings).
Outcome: SB won $4.93

Gotta love 2NL.