Mangekyou revealed an exploit that allows players to gain up to 300 MMR in a single Dota 2 match

Mark “Mangekyou” Kharlamov stated that there is an abuze in Dota 2 that allows you to gain 200-300 MMR per game using a vulnerability in the calibration system.

The cyber athlete explained how the abuze works during a stream on Twitch:

"Percent confidence needs to be reworked because there's an abuz. When you have a high PTS, when your confidence goes up to 27-28%, people overfill themselves and get 200-300 PTS per game. That way they can abuze as much as they want"

Mangekyou said Valve should rework the calibration system, because the vulnerability allows for a huge amount of MMR. According to him, it is enough for the confidence in the rating to reach 28%, after which “overflowers” get hundreds of points per game. The cybersportsman emphasized that this abuz can be used indefinitely.

Recall that earlier MMR overflowers suddenly disappeared from the Dota 2 ladder.