This player had raised UTG a few hands before with k9 off suite. He showed to be somewhat aggressive. I figured I'd be a 40/60 dog at worse. Bad play?

Full Tilt Poker Game #18079963623: $29,000 Guarantee (Rebuy) (136359991), Table 318 - 25000/50000 Ante 6000 - No Limit Hold'em - 20:00:40 ET - 2010/01/31
Seat 1: GuIizZz (1,929,256)
Seat 3: x--unique--x (1,520,406)
Seat 7: saccer (693,418)
Seat 8: RevG (1,527,261)
Seat 9: kpstacknchps (1,387,811)
GuIizZz antes 6,000
x--unique--x antes 6,000
saccer antes 6,000
RevG antes 6,000
kpstacknchps antes 6,000
x--unique--x posts the small blind of 25,000
saccer posts the big blind of 50,000
The button is in seat #1
*** HOLE CARDS ***
Dealt to saccer [Ah 8s]
RevG folds
kpstacknchps raises to 122,000
GuIizZz folds
x--unique--x folds
TheLuckyGoose1 (Observer): GL GL GL Guizzz
saccer has 15 seconds left to act
saccer has requested TIME
GuIizZz: ^^ i hope !
GuIizZz: ty
saccer raises to 687,418, and is all in
kpstacknchps calls 565,418
saccer shows [Ah 8s]
kpstacknchps shows [5c 5h]
*** FLOP *** [Js Tc 7c]
TheLuckyGoose1 (Observer): how many time did u rebuy?
*** TURN *** [Js Tc 7c] [6h]
*** RIVER *** [Js Tc 7c 6h] [Ts]
saccer shows a pair of Tens
kpstacknchps shows two pair, Tens and Fives
kpstacknchps wins the pot (1,429,836) with two pair, Tens and Fives
kpstacknchps: gg
saccer: gg
saccer stands up
*** SUMMARY ***
Total pot 1,429,836 | Rake 0
Board: [Js Tc 7c 6h Ts]
Seat 1: GuIizZz (button) folded before the Flop
Seat 3: x--unique--x (small blind) folded before the Flop
Seat 7: saccer (big blind) showed [Ah 8s] and lost with a pair of Tens
Seat 8: RevG folded before the Flop
Seat 9: kpstacknchps showed [5c 5h] and won (1,429,836) with two pair, Tens and Fives