Hey guys,

So here’s a thing that has happened to me three times in the last three live tournaments I have played (in three consecutive days). Three different villains check raise my flop c-bet either all in or a pretty considerable size. I have a good holding and call the shove and he flips the naked open ender. I’m guessing with 31% equity and potential fold equity this move can have its place.

Here are the three scenarios:

1. $80 buy in, early stages. Button is unknown but seems competent. BB is in a few pots but has not shown to get out of line. It’s less than 2 hours into the tournament so no real reads. I limp 22 after being folded to in CO. Button makes 3x, SB folds, BB calls, I flat. 
Flop is 24Kr. BB checks, I check, button bets 50% pot, BB calls, I make a raise (which is to almost 50% of the my and BB’s almost identical stack sizes), button folds, BB ships, I call. 
BB was never getting a fold here, so is he making a mathematically correct shove with his 35 against whatever hands I am check raising here on a 3-handed flop?

2. $40 buy in, early stages. SB is new to the table and short-stacked. Has flatted AJ for 1/4 of his stack from BB in previous hand, so I’m not thinking he’s too good. I am on button, raise with AQ, SB calls, all others fold. Q46r flop, SB checks, my c-bet is for 2/3 his stack, he c/r me all in and I call. He’s never getting a fold here, so is this mathematically correct/justifiable with 57?

3. $40 buy in, mid to late stages. Just moved to new table and against all unknowns. Third hand I am button with QJ, raise. UTG was the only limper and the only one to call after my raise. QT3 flop, I c bet, he check raises me big. He is deep, as am I, so I flat. 5 turn, he bets again, I call. River brings the 8, he bets very small in relation to pot size and I think if he had two pair or a little set I can rep the straight by making a big raise that actually puts him all in. Of course, you can’t bluff against the nuts here and I lose a huge pot.

So is there something about the flop c/r with the open ender I don’t understand where competent players are ‘adding’ fold equity to their actual hand equity on rainbow boards (none of the above had backdoor flush draws so we can’t count that). Other than hand 3 which I think I played terribly, what are your thoughts not so much on my play but on the various villains’ check-raise OESD play in general?

Thanks