AK float rivers top pair, i get 3bet all-in

[Deuce2High]

villian seems tight....... i was getting 5-1 on the river or something

Full Tilt Poker Game #1181448538: Table Auborn (6 max) - $10/$20 - No Limit Hold'em - 19:53:29 ET - 2006/11/01
Seat 3: Pwnasaurus ($2,936.50)
Seat 4: YSP All In ($1,176.50)
Pwnasaurus posts the small blind of $10
YSP All In posts the big blind of $20
The button is in seat #3
*** HOLE CARDS ***
Dealt to Pwnasaurus [Ac Kh]
Pwnasaurus raises to $70
YSP All In calls $50
*** FLOP *** [8c 9h 3c]
YSP All In checks
Pwnasaurus checks
*** TURN *** [8c 9h 3c] [9d]
YSP All In bets $80
Pwnasaurus calls $80
*** RIVER *** [8c 9h 3c 9d] [Kd]
YSP All In bets $180
Pwnasaurus raises to $540
YSP All In raises to $1,026.50, and is all in
Pwnasaurus has 15 seconds left to act