What is Preflop Caller in Poker?

A Preflop Caller (PFC) is any player that calls a preflop raise. For example, let’s say you’re in the cutoff position in a $1/$2 No Limit Hold’em game, and the player in the LoJack raises to $10.  If you decide to call the raise of $10, you are the preflop caller, or the PFC.