Coming in the next Update: Unopened PFR Statistic

Unopened PFR is a measure of how often you raise preflop all the players before you either checked or folded.

I want to make this identical in calculation with Hold’em Manager. So a question for my customers who also have Windows and HEM: should the denominator be the number of hands you’ve played? Or the number of times you had an opportunity to make an unopened preflop raise? The latter seems more logical to me.