So been playing tournaments only for a month. Sat down at 1/2 table with antes to get some cash feel again and this hand comes up after a few minutes.

Villain is 33/22 over tiny small sample.

Full Tilt No-Limit Hold'em, $2.00 BB (5 handed) - Full-Tilt Converter Tool from FlopTurnRiver.com

BB ($381.20)
UTG ($264.30)
MP ($416.70)
Hero (Button) ($400)
SB ($577.40)

Preflop: Hero is Button with A, J
UTG bets $6, 1 fold, Hero calls $6, SB calls $5, BB calls $4

Flop: ($25.50) 6, A, 7 (4 players)
SB checks, BB checks, UTG checks, Hero bets $20, 2 folds, UTG calls $20

Turn: ($65.50) 7 (2 players)
UTG checks, Hero bets $52, UTG raises to $140, Hero?

I don't see how we can fold against an unknown, but srsly wtf? Feels like bluffing to shove here, but not much point in letting him draw if we are going with the hand anyway (he has about $95 left). He might bluff the river if he is terrible though, which his line kinda suggests. I doubt there's too many sevens in his UTG range, but kinda hard to put him on a draw also since he didn't cbet.

Edit: 33/22 not 22/33