Players have the option to reset their MMR by going in the settings menu and activate the MMR recalibration in the Account tab. The fall season recalibration option will be “spaced out evenly” between October 22 and November 22 and can be activated “anytime until the season is over.” Valve announced.

Does MMR reset Season 2 Dota?

Does MMR reset each season on Dota 2? Yes, kind of, and at the moment that's the only way you can reset the MMR of your account, or maybe I should add that's not a complete reset of your rank, but it's still the only way to change it without playing or creating a completely different account.

How does MMR reset work in Dota 2?

Because Dota 2 will constantly update itself with a new season (this new season update usually occurs every six months), the game will also reset the rankings of all players and have them recalibrate their MMR Rank. Now calibrating your profile's rank is easy; you only need to play 10 ranked matches.