Interesting spot in 1k

[markysals11]

Had played very few hands to this point and had only shown down AA and AK previously before this hand came up...

PokerStars Game #10995163895: Tournament #55435428, $1000+$50 Hold'em No Limit - Level V (75/150) - 2007/07/17 - 21:26:30 (ET)
Table '55435428 36' 9-max Seat #8 is the button
Seat 1: Assassin8tor (4092 in chips)
Seat 2: yellowsub86 (7306 in chips)
Seat 3: markysals11 (3517 in chips)
Seat 4: gipsy74 (13075 in chips)
Seat 5: thekid08 (5159 in chips)
Seat 6: GQG66 (4749 in chips)
Seat 7: Kroko-dill (4810 in chips)
Seat 8: Rabscuttle (10913 in chips)
Seat 9: Sdouble (1474 in chips)
Sdouble: posts small blind 75
Assassin8tor: posts big blind 150
*** HOLE CARDS ***
Dealt to markysals11 [Jd Kd]
yellowsub86: folds
markysals11: raises 250 to 400
gipsy74: folds
thekid08: folds
GQG66: folds
Kroko-dill: folds
Rabscuttle: folds
Sdouble: folds
Assassin8tor: calls 250
*** FLOP *** [2d 9d Ah]
Assassin8tor: checks
markysals11: bets 550
Assassin8tor: raises 550 to 1100
markysals11

thoughts?