Three outer hits

[DOTTT]

Stars $100 sng. I make a nice comeback from 400 in chips and now in 3 rd place when this hand took place.
PokerStars No-Limit Hold'em Tourney, Big Blind is t150 (5 handed)

BB (t3050)
UTG (t1870)
MP (t1765)
Hero (t2115)
SB (t4700)

Preflop: Hero is Button with A[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/spade.gif[/img].
UTG folds, MP folds, Hero raises to t450, SB calls t375, BB folds.

Flop: (t1050) 4[img]/images/graemlins/spade.gif[/img], 3[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/diamond.gif[/img] <font color="blue">(2 players)</font>
SB checks, Hero bets t450, SB raises to t1500, Hero raises to t1665, SB calls t165.

Turn: (t4380) 9[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>

River: (t4380) T[img]/images/graemlins/club.gif[/img] <font color="blue">(2 players)</font>

Final Pot: t4380

Results in white below: <font color="blue">
Hero shows As Ks (high card, ace).
SB shows Ah Td (one pair, tens).
Outcome: SB wins t4380. </font>

I don’t know if I should've called his re raise to begin with. I felt pot committed at that point and figured if he was holding a jack I still have two over cards and back door flush possibility. Any comments on my play?