Call with TPTK at this point or fold

[Aquinas]

9 people left in a 20 person 30$ sng. My stack is 1800.
Im dealt AK ug
Hero calls
ug to button-1 fold
button raise to 300
sb fold
bb call
hero call --button is tight but aggressive--he's played 6 hands this tourney, and showed 1 (qq). bb is a maniac.
flop is K 2 4 rainbow pot is now 1050
Hero raises 600 to 1650
Button pushes (has me covered)
bb folds
hero? --if i fold I have 900 chips left ie 9 bb

[gabe]

gotta call, pot comitted with TPTK i say!

[Aquinas]

That's what I wanted to hear...called and the guy had aa...go figures...But he was very tight so I was curios if anyone would fold it.

[fjuanl]

I think that was the correct move. TPTK is good enough at this point, no flush or straight draws out there...and theres no way he is holding K2 or K4. And like gabe said, your pretty pot commited after the flop bet. If he has AA, 44, 22, he's getting all my chips.