Does MMR get reset towards average at the end of the season?

As mentioned in this question Should I avoid playing ranked for a while after the season starts? I believe that MMR gets “averaged” at the end of each season, however I’ve not seen any official source for that belief.

The formula I’ve seen basically says that everyone’s MMR gets set to (oldMMR+1200)/2. In other words it moves you half way towards 1200 from where you are now.

  • Why Pro Junglers often buy SightStone?
  • Is there a cap for cooldown reduction (CDR) in League of Legends?
  • Between a Cinderhulk enchantment and a Sunfire Cape, which would get priority?
  • What is the difference between a “carry” and a “fighter”?
  • How do players link Alistar's Headbutt and Pulverize in an instant?
  • What is the idea of a bot “kill lane”?
  • Is my belief correct? Are there any official sources to confirm what happens?

    The only thing I’ve been able to find is this from last year which says that they would be doing a “soft rankings reset”. That may be where this comes from but I’ve found nothing for this year.

  • Spell vamp / Life steal and AD scaling abilities
  • Would Ahri's Charm slow down Master Yi while he is using his ultimate?
  • What is the worth of a soul?
  • What happens if Shen teleports to Nocturne when Nocturne is in midflight using his ultimate?
  • When multiple shields are present, which one is consumed first?
  • Is it possible to change “recommended Items”?
  • 2 Solutions collect form web for “Does MMR get reset towards average at the end of the season?”

    I’m not 100% sure what the exact formula is, but you are correct. There is sort of a soft reset between seasons but I’m not completely sure how strongly it is. When you are at lower/mid ELOs you don’t notice the push too much, but it’s very noticeable at high ELOs (which is completely supported by the Math). Last season I ended up around mid to upper Diamond. When this season started, I began in Platinum 1 after doing extremely well (7/10 I believe) in my placement matches.

    TL;DR; Yes, but I’m not 100% sure on the formula but it’s likely something close to that.

    No.

    Your MMR of the previous season will be taken into account when you play your placement matches of the following season. If you are Gold V you will be likely placed at the same ranking if you play average for your level.

    This ofcourse means if you do better than average, you will be likely placed higher than Gold V and vice versa if you play worse than average.

    The 1200 ELO formula only counts for Summoners who have never played ranked games before.
    (Source: http://leagueoflegends.wikia.com/wiki/Elo_rating_system)

    Soft ranking reset indeed means you get to play your 10 placement matches again to get you placed at your level.

    We love Playing Games, especially Video Games.