[mrcunningham]

Thanks for clarifying. I assume that by ATC you mean that they will limp any two cards, not that they will bet or raise any two cards. If so, the SB flop bet is concerning and the CO 3 bet even more so. If nobody is betting a draw, then I guess that you are likely behind two pair, a set, or a straight held by the CO, and may be behind 2 pair held by SB, also you have to duck both straight and flush draws held by the other callers. Makes me wonder if folding to the CO 3bet on the flop would have been the correct move.