Matchmaking Hotfix and Season Reset - 12/15

General Discussion
Hi everyone,

As many of you may be aware after reading a forum post we made earlier this week, we’ve been working to resolve an issue affecting placement Matchmaking Ratings (MMR) following the Ranked Season Roll on Tuesday. After investigating the issue, we rolled out a fix that we believed would resolve it, and also reset the affected players’ placement matches.

However, it’s evident that there is still unexpected behavior from placement MMR and we have been receiving reports that players are still being placed inaccurately. These placement issues are unrelated to the performance-based matchmaking update and we are working hard to determine the root cause and resolve this situation as soon as we possibly can. We sincerely apologize for the frustrations this has caused for those of you who’ve already embarked on your Hero and Team League journey this season.

While we are working toward that fix, we also want to prevent as many players as possible from being placed incorrectly. As a result, we have disabled ranked matchmaking queues in all regions until we are confident we can solve the issue.

We understand that disabling the ranked queues is less than ideal, and want more than anything to get you back in the action as soon as possible. Our ultimate goal is to provide you with the best matchmaking experience we can, so we thank you very much for your continued patience as we work to ensure ranked play provides a fun and fair experience for everyone.

Until that time, feel free to jump into one of our other game modes, including Quick Match and Unranked Draft. We will keep you updated as we make progress on a fix for ranked play.
Below the message from Game Director Alan Dabiri.

Hi guys,

I just want to apologize to all of you regarding the Ranked mode issues we caused with this release. This was a massive update that included many changes across many areas of the game. We had a lot of internal testing and an extended PTR, but we still fell short here. There’s really no excuse. We need to do better, and I take full responsibility for this. The team is hard at work on fixing the issues, and once we have a fix deployed, we will re-enable the ranked game mode as soon as possible.

I just want to thank you all for your feedback, passion, and most of all, patience as we work to make things right.
Hey everyone,

As mentioned in earlier forum posts regarding Matchmaking Ratings here and the follow up here, we have been working hard on a fix to address the issue affecting placement matchmaking ratings. After further investigation, we identified the root cause and have deployed a fix. We apologize to everyone who has been impacted by the rough start to the new ranked season.

We have re-enabled matchmaking for Hero League and Team League. And although the issues we encountered were unrelated to the Performance Based Matchmaking improvements, we are reinstating Ranked mode with the Performance Based Matchmaking updates turned off. We want to make sure we’ve resolved all of the issues and that the ranked season placements are in a good place before we reinstate any new features. We understand many of you are very excited about the Performance Based Matchmaking changes and we’ll update everyone once we’re ready to turn them back on again.

Additionally, to ensure the accuracy and fairness of this ranked season, we have decided to completely restart this season. That means all accounts, regardless of whether they were affected by this issue, will be reset. We understand that this is very frustrating, particularly for those who have already redone their placement matches. Once again, we sincerely apologize to our passionate and dedicated players who have been impacted by this unfortunate issue. Thank you again for your patience as we work to make things right.

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