river call?

Hand converted with online PokerStrategy.com hand converter:

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$0.1/$0.25 No-Limit Hold'em (6 handed)

Known players:
[tg]BU$68.60:///////;SB$25.65:///////;BB$25.93:///////;MP2$27.68:///////;MP3$24.25:///////;CO (Hero)$31.10:///////;[/tg]

Preflop: Hero is CO with T:c, 9:s.
2 folds, Hero raises to $0.62, BU calls $0.62, 2 folds, BB folds.

Flop: ($1.59) 4:d, K:h, 2:s (2 players)
Hero bets $1.00, BU calls $1.00.

Turn: ($3.59) 8:d (2 players)
Hero checks, BU checks.

River: ($3.59) 9:d (2 players)
Hero checks, BU bets $2.00, Hero folds, BU gets uncalled bet back.

Final Pot: $3.59.
his stats in 294 hands　　vpip18 pfr15 af2,1 wtsd34 w$sd50
I think its very tough but still can I call the river?
does he have KQ,KJ,KTs?