Good afternoon.
Since the "Team Tournament" thread is closed, I'm writing here.
This concerns matches in the team tournament played by the player Looser. There's talk that they might be annulled, and even that scores could be set to zero. This isn't quite clear. Each match whose results might be annulled should be reviewed by the Arbitration Committee (AC), and if a decision is made to annul it, then it should be annulled. But you can't annul the entire history of games because of just one.
He has a responsibility to his team: D
There's nothing to look at; annul everything. Or rather, set it as a loss. And the team should be punished for its player, and his opponents should be compensated for their moral damages. And they are not obliged to replay.