If anyone knows the devs, please reach out. This is the kind of idiot that creates a toxic, hostile environment for everyone he plays with. Absolute cancer in the gaming community. Persons name is [usuk]TheDuder .
What you don't see is him threatening to team kill Dizzy earlier in the match because he didn't have a mic, then tried to do so. Dizzy got the jump on him. No, i don't think this is the streamer dizzy.
[Edit]: *because he didn't have a mic
[Edit2]: Since people are not watching the video, he team killed both me & my teammate. Start at 2:45. This is just a part of the match, this goes on the for the rest of the match (i actually didn't realize it was him who was shooting at me till he finished me off). I did not fight back at all.
I've passed this along to the team to take a look.