100nl overpair facing a jam

[UTG-RAISE]

No stats on player, he has been playing fairly loose but not getting too out of hand....hero?

PokerStars No-Limit Hold'em, $1.00 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Button ($138.85)
SB ($89.95)
BB ($187.05)
Hero ($115.75)
MP ($101.50)
CO ($108.85)

Preflop: Hero is UTG with T[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/spade.gif[/img].
<font color="#CC3333">Hero raises to $5</font>, <font color="#666666">2 folds</font>, Button calls $5, SB calls $4.50, <font color="#666666">1 fold</font>.

Flop: ($16) 8[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/club.gif[/img], 9[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, <font color="#CC3333">Hero bets $17</font>, Button folds, <font color="#CC3333">SB raises to $84.95</font>, Hero???