ranked win/loss streak

how is it possible that I win like 18 games of 20 and got promoted 2 times and after I lose 18 games of 20 and got demoted 2 times how is this possible? I mean if I was that good to win 18 games how now I can't carry alone my whole team?

We're testing a new feature that gives the option to view discussion comments in chronological order. Some testers have pointed out situations in which they feel a linear view could be helpful, so we'd like see how you guys make use of it.

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