77 goes crazy

UTG is a liberal loose donk. SB is a TAG, somewhat conservative.

I figure UTG has nothing or he would have bet on the flop, and that SB is bluffing or has a weak hand at best.

Comments on all streets welcome..

Party Poker No-Limit Hold'em, $ Hero (6 max, 5 handed) FTR converter on zerodivide.cx

UTG ($306.37)
MP ($93)
Button ($99.50)
SB ($66.38)
Hero ($90.60)

Preflop: Hero is BB with 7:spade:, 7:heart:. SB posts a blind of $0.50.
UTG raises to $4, 2 folds, SB (poster) calls $3.50, Hero calls $3.

Flop: ($12) T:diamond:, 6:diamond:, 4:spade: (3 players)
SB checks, Hero checks, UTG checks.

Turn: ($12) 8:heart: (3 players)
SB bets $7, Hero raises to $14, UTG folds, SB folds.

Final Pot: $33

Results in white below:
No showdown. Hero wins $33.

if anything, bet the flop.

do you really think a better hand will fold or a worse hand will call?

If SB spiked an 8 and bet it or plays mid/bottom pair weakly, I think he gives it up here.
If they are loose they might even call with overs or A6.

However, I would expect 78/89 2nd pair gssds to call your weakish raise.