Your history with a player
See your recorded kills and deaths involving a player on their tooltip.
Settings → Gameplay and panels → PvP on player tooltips
See your recorded kills and deaths involving a player on their tooltip.
Choose your setting
Open Settings → Gameplay and panels → PvP on player tooltips.
Use it while you play
See your recorded kills and deaths involving a player on their tooltip.
Adjust it when you like
Return to the same control to change your choice.
Questions
Can I change this later?
Yes. You can change the setting whenever you choose.
Where can I change it?
Settings → Gameplay and panels → PvP on player tooltips.
The add-on is out now.
A free alpha for WoW: Forever. The app for web, iPhone and Android is coming soon.