This is a companion addon to go along with the Raid and Mythic+ Rankings site, Raider.IO: https://raider.io. With this addon installed, you'll gain access to an easy way to view the Mythic Keystone scores and Raid Progress for players-- all without leaving the game!

Simply hover over a player with your mouse, your guild roster, or even the Group Finder list where you see queued people; if they meet the minimum qualifications then you'll see their score and best run in the tooltip.