When using Poker Tracking Software, one of the most important HUD stats is PFR.
Poker Tracking Software is an application that most if not every serious online poker player utilizes to track their own and their opponent’s statistics. The HUD is the vital feature of these applications. HUD stands for Heads Up Display, which is a feature that runs during the games attaching to the poker client and displays statistics next to each player updating in real time.
When using a HUD, you must master a few stats first. Understanding and leveraging VPIP along with PFR is vital to your poker success.
PFR - Preflop Raise
PFR - PFR stands for Preflop Raise. This is a percentage of how often this player raises preflop. PFR can indicate how passive or aggressive your opponents are, as well as helping you understand your own balance of aggression.