MMR, which stands for Matchmaking Rating, is a broad term that does not apply to League of Legends. This value determines each player’s skill level. This value is used to match players and make team selections in online games. The MMR is usually increased by winning, while it is decreased by losing.
It is simply a number that indicates where you stand in relation to other people. The MMR is used to identify people, and place people with the same MMR in the exact same match. This makes the game even.
Matchmaking is based upon league mmr, which is used to determine a player’s skill level. This applies to all game modes, ranked and normal. Even though it may seem odd that players should not be judged on their LP and division, ranked silver players might find themselves playing alongside gold or bronze players. Their MMR is responsible for this.
Although the calculations and works of MMR are not public, MMR’s concept seems simple.
Here’s how MMR works.
Your MMR will increase if you win games. If you lose games, it will decrease.
League of Legends will notice if you lose ten consecutive games and will tell you that you don’t belong there. It will then push you to a lower area where you can meet other players of similar skill levels and play fair games. League of Legends will also recognize that you have won 10 consecutive games and will tell you that it is too difficult for you. It will then push you to a lower region where you will be matched up with players of similar skill.
Both normal and ranked games can use the MMR, with both having a similar number. You will be often playing against opponents with the same rank as you, even in normals. This keeps the game balanced and you won’t see a Diamond player playing in a game with Bronzies.
To ensure everyone plays fair, MMR is used. League of Legends adds the MMR of each team and matches them against five other players with the same total. The match will remain balanced, even though the ranks may be different. It is possible to have one Challenger and four Diamonds play against an all Grandmaster team. Even though it may not seem fair, the total MMR equals and shows that there is balancing.
League’s matchmaking software puts together a game while you wait in line. It tries to balance three things.
Fair matches – Each team has roughly the same skill
Preference for position – You can play the position you choose
Rapid queue times – Queueing takes as little time as possible
It takes a lot of tuning to balance these things, but here is a guide.
Your Matchmaking Rating is a number Riot uses when determining your skill and, when matchmaking, your opponents’ skill. When you play in a queue, everyone’s MMR begins at the same time. It increases when you win and decreases when you lose. It will search for players with similar numbers to you when looking for games to place you in. Each queue has a different MMR, so you can climb into one queue while not affecting the others.
A “fair” match is one in which each team has a 50% +/-11% chance of winning. A perfect match would have ten people with identical MMRs queuing at the same moment, each of them having chosen a position they are best suited for. This is extremely rare, depending on the queue. Sometimes, teams may have slight skill differences (on average, no more that 4-5 MMR).
Preference for position
When you enter a draft queue, you must choose two positions. Your primary position will be prioritized, and your secondary position as backup. If we are unable to find a team comp that matches your skill level, we may autofill you. We discuss this in detail here. If the queue gets too long, it will trigger. This is often because there aren’t enough positions available. We consider this an option last resort to getting you into a game.
Queue times are fast
Fair matches are still a priority in League to keep it competitive. However, long queue times can prove frustrating. We would prefer that you wait longer to get a fair match. However, we also know that waiting in line is the most frustrating part of League. The matchmaking system might be looking slightly further away from your MMR if you wait longer.
All of it together
The ideal situation is ten people playing a well-balanced match. There are many factors to be aware of:
Matches can be played at low activity times during the day
Different MMRs can be found in different parties
Sometimes, a shortage of one or several positions can lead to one or more players being automatically filled.
All of these factors throw curveballs at matchmakers, forcing them to weight one aspect more than the other. There are other factors that can affect how fair a match is perceived.
One or more players try an off-position
One or more players attempt to identify an unfamiliar champion
A fair match where one lane is unfairly matched up
Early game champions and assassins can cause games to spiral out of control.
Sometimes players are just bad at playing!
Climbing up the ladder
Your personal progress is represented in the Leagues system. These are some examples of situations that illustrate the differences between your League’s MMR and your League.
You are winning a lot and the matchmaker places you against stronger opponents.
A player who is aiming for gold should expect to play against higher-tier players. This means that you are winning more than you are losing and the matchmaker has begun to believe you deserve a higher ranking. You may see your opponents in a different division if you are on a winning streak.
Your opponent is losing a lot and the matchmaker will place them against lower-ranked competitors to help them find a suitable spot on the ladder.
Although the average MMR of the teams is equal, one team has five roughly equal teammates while the other has a few highly-ranked and some lower-ranked players. This is a rare one, even for fully-premade teams. However, we do our best to ensure fair matches by balancing queue times.
We understand that some matches can feel like stomps. However, we try to ensure all teams have at least a 50+/-1% chance to win using all information available. League is so competitive because it allows you to compete against similarly skilled opponents.