PS27, heads up, postflop play with TPnK

[jb9]

This was our first hand heads up. I had just eliminated the 3rd place player (and practically doubled my stack).

My opponent has been chip leader for a while and has been doing a good job of stealing blinds and bullying people. I had been short stacked for a while and was either pushing preflop or folding for the last few levels.

PokerStars No-Limit Hold'em Tourney, Big Blind is t400 (2 handed) FTR converter on zerodivide.cx

Button (t8775)
Hero (t4725)

Preflop: Hero is BB with A[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Button raises to t800</font>, Hero calls t400.

Flop: (t1225) 7[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Button checks.

Turn: (t1225) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">Button bets t800</font>, Hero calls t800.

River: (t2825) K[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets t3100 (All-In)</font>, Button ...

Any thoughts? If you are Button, what do you need to call me? Will you fold a better hand than TPnK?