Ingame Press TAB to bring up the stat screen and click the gear icon on the far right for the player you wish to report . After game and score screen You can open a whisper to them and the game will autofill for player names that were in your last game . For example , if you ' re being flamed by a player called Dickhead , you can type w Dickhead into chat and it will open a whisper to the same Dickhead that was flaming you and your team . From here you can rightclick their name to report . You can use this if you need to report a player after the game is over and you ' re off the score screen . Note that you don ' t actually have to send them a message for this to work . EDIT Forgot to mention , you can use this same method to mute individual players . I recommend it highly over disabling your chat entirely . In fact , I recommend never disabling your chat completely , only mute individual players , and do so without hesitation .