25/50 facing tough river raise

[Allinlife]

Villain is Dit_Ma_May, probably one of biggest winners at 25/50 who plays 25/20ish style. he views me as TAG, possibly slightly money scared since I only play 25/50 when the table is soft and he knows this. However we haven't been exactly tangling much with each other, though I felt that he was running over me a bit with the blind steals.

Party Poker - No Limit Hold'em Cash Game - $25/$50 Blinds - 3 Players - (LegoPoker HH Converter)

SB: $4,120.00
Hero (BB): $4,172.00
BTN: $8,785.50

Preflop: Hero is dealt K[img]/images/graemlins/club.gif[/img] Q[img]/images/graemlins/heart.gif[/img] (3 Players)
<font color="red">BTN raises to $175.00</font>, SB folds, Hero calls $125.00

Flop: ($375) 5[img]/images/graemlins/club.gif[/img] 2[img]/images/graemlins/diamond.gif[/img] K[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $300.00</font>, Hero calls $300.00

Turn: ($975) 7[img]/images/graemlins/diamond.gif[/img] (2 Players)
Hero checks, BTN checks

River: ($975) 4[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $611.00</font>, <font color="red">BTN raises to $2,111.00</font>, Hero ...($1500 more)

How is my river bet? at the time when I was making decisions 2 thoughts went through my head

a) Regs rarely make bluffs that don't make sense
b) but he views me as a money scared TAG and puts me on Kx hand/ and is attempting a move.

of the two, A) seems way more likely so this should be a easy fold- weird rivered straight or slowplayed monster. what do you think?

[Squareview]

your beat at least 60% here. is he that creative. this is a really creative play if your ahead ...

[KakiTee]

do you think he check 68 behind on the turn because he's willing to give you credit for TP on dry board due to you being nitty in his eyes?

- otherwise 36 makes sense, so does 44. If you really feel that he's trying to exploit you though you probably have to call here - if you think he has enough information for that take to seem ideal.

[mperich]

Fold. Bet more on the river too, to avoid situations like this

-Mike

[KakiTee]

[ QUOTE ]
Bet more on the river too, to avoid situations like this

[/ QUOTE ]
there is no reason for villain to think this is a blocker.