# MMR - calculation is TOTALLY WRONG

I just played nice game 24 min duration, we had several big fights.
Finally my random team won, and I got = +1 MMR . It is shocking outrageous!!!

But other times, when certain people leave instant, I need to close the game and I loose -9/-24 MMR. And this happens sometimes 5times in 5minutes because of somebody does not want to game.

What do you think? Is it fair how MMR is computed?

iâ€™m not saying i like everything about it (ignoring other issues) but it depends on multiple factors including the MMRs of the other players, the duration (seems to be a factor), and probably other things. If you win an easy game that youâ€™re expected to win, possibly because you have someone significantly higher in MMR, youâ€™re not going to gain many points, and if you lose such a game, you will lose a lot (because you are expected, statistically, to win). You cant just say â€śoh i got 1 mmr and lost 10â€ť and cry that itâ€™s unfair.

Again, thatâ€™s not to say there arenâ€™t issues, but it isnâ€™t simply random or saying â€śI want cat to lose lots of MMR and some other guy to get lotsâ€ť

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Like you said depends also on duration.
If a game lasts 1 hour , and is a hard win, than 1 MMR is just outrageous ! Blizzard is having fun of us !

Well if you actually only got 1 MMR for a game, that means that the system, in matching those players into the game, expected that your team was almost certain to win. If it ended up being a difficult game, that would mean you were underperforming for your rating.

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IF the system expects that, than also the system can interchange 2 players in order not to expect that.
Eg. ABCD vs EFGH , can result that team ABCD almost sure wins they are too strong;
so then system could interchange, and pair: AHCD vs EFGB than !

And put a minimum, because when eg. Shockandawed leave, one after another 5 games, in 24sec/(game+search) x 5 games = 2 min, I am loosing like -200 MMR without actually playing the game - thatâ€™s really not fair.
Then (if the Goddess Agrees) 1x normal game and after 30 min I gain back +1 MMR.

This is actually the biggest issue right now (aside from the match recording issues). It does not always balance the teams correctly. Itâ€™s not really the MMR calculation that is wrong, it is the matching system.

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