Between a fish and a rock...

[LinusKS]

UTG is the rock (17/3/1.4 - 320), MP is the fish (40/0/1 -30)

Party Poker 3/6 Hold'em (10 handed) converter (http://www.selachian.com/tools/bisonconverter/hhconverter.cgi)

Preflop: Hero is BB with 7/images/graemlins/club.gif, A/images/graemlins/heart.gif.
<font color="#666666">1 fold</font>, UTG+1 calls, <font color="#666666">3 folds</font>, MP3 calls, <font color="#666666">3 folds</font>, Hero checks.

Flop: (3.33 SB) K/images/graemlins/club.gif, 7/images/graemlins/diamond.gif, A/images/graemlins/club.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, UTG+1 calls, MP3 calls.

Turn: (3.16 BB) 5/images/graemlins/spade.gif <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">UTG+1 raises</font>, MP3 folds, <font color="#CC3333">Hero...?

[Yobz]

Raises. If capped, I would call the river.
If called and checked to, bet the river.

[Jules22]

with utg's stats it looks like you're up against a big one. i would call the raise and check call the river unimproved. i wouldnt be surprised if he has 77 unfortunately