Player called Insid3r (https://steamcommunity.com/profiles/76561198872587606/) has been killing his teammates in competitive mode whole day. After killing 1-2 players, he leaves game and rejoins. This resets the TK kill counter.
He gives various reasons for why he's doing so. In the morning, it was because he was "protesting" the "developers" so they might "fix the broken game". Right now he's saying he's TK'ing us because he died due to someone making a callout in voice. Which is kinda what you're supposed to do in this game...
Anyway, he's been ruining games whole day. The saddest part is that he's lvl 170 so he's probably played like, 500 hours, and still has nothing better to do with his time.