expert play or lapse in judgement?

[hellite]

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expert is in is SB with 5[img]/images/graemlins/club.gif[/img], 5[img]/images/graemlins/spade.gif[/img].

UTG calls, a tough player raises, expert calls and big blind calls.

Flop: 4[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/heart.gif[/img], 9[img]/images/graemlins/club.gif[/img]

Expert checks, BB checks, UTG checks, tough player bets, expert calls...

is this call an expert play or lapse in judgement?

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Misplayed preflop, misplayed flop...unless you open fold here I think you misplayed the turn. HU is whole different story, but against a tough player with people yet to act this is a sucker play. Playing this from the small blind is retarded. Big time leak. I'm not trying to be rude - although I do try that sometimes - but this is simple stuff. I gues the only question after the preflop error should be "Do I lead this flop?" Check calling not an option.