Opponent is active and fishy. Laggy pre-flop, passive post-flop. Seems aware of position, so figure a top 15% or so hand here.

Button is thinking and a little difficult.
SB is a typical TAgg

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

UTG ($58.15)
MP ($87.95)
Fnord ($98.50)
Button ($209.75)
SB ($95.10)
BB ($83)

Preflop: Fnord is CO with J, 9.
UTG raises to $3, MP calls $3, Fnord calls $3, Button calls $3, SB calls $2.50, 1 fold.

Flop: ($16) 2, 9, 4 (5 players)
SB checks, UTG bets $3, MP folds, Fnord raises to $20, Button folds, SB folds, UTG calls with 10 seconds left on his timer $17.

Turn: ($56) 7 (2 players)
UTG checks.... (just over $35 behind)

I seriously considered checking this behind.