[luckyharr]

I guess he could have K9 or K8s. Is he too tight to call those out of the BB preflop? If he had 98s, check raising the flop would have been much better than leading. 99 seems possible since he might not have liked 3 betting preflop with 5 players in the hand. 22 is very possible. Not capping the flop is suspect with the set hands but maybe he wanted to make sure MP and UTG call one more with hands that are likely drawing thin. KQ/KJ seem like strong possibilities.

I would call because he's Taggy and therefore likely observant. You three-bet after a bet, a raise, and a cold call on a K high flop which announced to everyone that you have KQ, AK or Aces since there is no apparent draw. Yes, he has KQ here sometimes but the set hands seem more likely the way he played it.