If he flats, most of the time he will have 88/99 or KQs AJs QJs type of hands which again, block so many outs to flop draws or pairs and we can’t continue postflop. However, the green circle indicates how few 2x-7x our opponents have in their range and we will more frequently flop straight draws, 2-pairs or trips.
Of course, it very much varies from which position we face the open raise and from which position we face a flat call; but when being out of position against our opponents, we have to be careful against tighter ranges. Of course, it changes when playing against a late position open raise and for example a BU flat call.
Stack sizes also come into play. When being shorter, you can start defending a little wider since you are more often incentivized to check/shove flops, which leads to a higher equity realization for your entire range. More importantly, people deploy smaller open raise sizes with shorter stacks (<40bb).
I will cover shorter stack sizes more in depth in the next article.
Let’s have a final look into an EP 2.5bb open raise with 100bb effective and a Small Blind flat call. How do you think it would change our BB flat call range?