RSS-99 en big blind

Hand converted with online PokerStrategy.com hand converter:

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€0.1/€0.25 No-Limit Hold'em (4 handed)

Known players:
[tg]CO€15.69:///////;BU€33.53:///////;SB€78.79:///////;BB (Hero)€12.50:///////;[/tg]

Preflop: Hero is BB with 9:s, 9:c.
CO raises to €0.75, 2 folds, Hero raises to €2.35, CO calls €1.60.

Flop: (€4.8) 8:d, Q:h, 4:s (2 players)
Hero bets €3.41, CO calls €3.41.

Turn: (€11.62) K:s (2 players)
Hero bets €6.74, CO calls €6.74.

River: (€25.1) J:h (2 players)

Final Pot: €25.1.
Results follow:

CO shows two pairs, kings and queens(K:h Q:c).
Hero shows a pair of nines(9:s 9:c).

CO wins with two pairs, kings and queens(K:h Q:c).

Que os parece?