Good point by Citizenfish. Let's say you make the correct fold every time he shoves over your $200 river bet. However, he is prob calling a shove with a lot of tens or 44.
So you save $400 every time you are beat, but lose $400 when you are ahead of a strong hand. As you are ahead more often than not on the river, not shoving is suboptimal. It would probably not even occur to me to do anything other than shove! |