bellagio 25-50: FPS leads to bad spot

[mikech]

or, "how i misplayed KK on every street."

wild game 4 or 5 nights ago. i got stacked on my very first hand for 5.3k on a pretty sick beat, so it prob'ly looks like i'm tilting a bit.

anyway, good aggressive player opens early to 175, one caller, i'm on the button with two red kings and make it 800 to go with about 12k behind. an orbit or two ago i'd made the exact same 3bet in position with rags, got no callers, and showed a 5. naturally, this time i get two calls, the open-raiser and the next player; they both cover me.

flop comes J 9 2 with two spades. they check to me, i bet here 95% of the time, but here i decide to check. mistake #1...

turn is a 5 or a 6, putting two diamonds on board. now the original raiser leads for 2100. other player folds, i call. prob'ly should've raised. mistake #2...

river is an offsuit ace. he leads for 6300. i...?

on one hand, i've under-repped my holding with the flop check, but on the other, it seems pretty obvious i have no better than a one-pair hand, so the ace is a good bluff card. can/should i call this big river bet?