River block turned call...

[AZK]

Ultimate Bet No-Limit Hold'em, $50 BB (9 handed) FTR converter on zerodivide.cx

saw flop|<font color="#C00000">saw showdown</font>

UTG+1 ($4825)
<font color="#C00000">Hero ($5047)</font>
MP2 ($7567)
<font color="#C00000">MP3 ($6059)</font>
CO ($6754)
Button ($7798)
SB ($3872)
BB ($5097)
<font color="#C00000">UTG ($6685)</font>

Preflop: Hero is MP1 with 3[img]/images/graemlins/heart.gif[/img], 3[img]/images/graemlins/diamond.gif[/img].
<font color="#666666">1 fold</font>, Hero calls $50, <font color="#666666">1 fold</font>, <font color="#CC3333">MP3 raises to $225</font>, <font color="#666666">4 folds</font>, Hero calls $175.

Flop: ($525) 3[img]/images/graemlins/spade.gif[/img], 2[img]/images/graemlins/diamond.gif[/img], 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">MP3 bets $525</font>, Hero calls $525.

Turn: ($1575) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, MP3 checks.

River: ($1575) 9[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $500</font>, <font color="#CC3333">MP3 raises to $3000</font>, Hero calls $2500.

Final Pot: $7575

This was against The Awesomest. Who always seems to have a stack but loses it as well. Something didn't mesh right with the turn/river action. Thoughts.