MMR, or Matchmaking Rating, is a hidden numerical value that League of Legends uses to determine your skill level and match you with and against players of similar ability. Understanding MMR is crucial for comprehending the ranked system, why you're placed in certain divisions, and how your win/loss streak affects your rank progression.
What is MMR?
MMR is an Elo-based rating system that constantly adjusts based on your game outcomes. When you win, your MMR increases; when you lose, it decreases. The amount your MMR changes depends on the MMR of your opponents and teammates. Winning against higher-MMR opponents grants more points than winning against lower-MMR opponents.
How MMR Relates to Ranked Tiers
While you see your rank as divisions and tiers (e.g., Gold IV, Platinum II), your actual matchmaking is dictated by your hidden MMR. Riot Games uses your MMR to:
- Matchmaking: Find opponents and teammates whose MMR is close to yours, ensuring fair and competitive games.
- Placement: Determine your initial rank placement at the start of a new season or when you first start playing ranked.
- LP Gains/Losses: Influence how much League Points (LP) you gain or lose after a match.
LP vs. MMR
It's important to distinguish between League Points (LP) and MMR:
- LP: This is what you see in the ranked ladder. You gain LP for wins and lose LP for losses, aiming to reach 100 LP to promote to the next division or tier.
- MMR: This is the underlying, hidden skill rating. Your LP gains and losses are a reflection of how your LP compares to your MMR.
If your LP is significantly lower than your MMR: You will gain more LP for wins and lose less LP for losses. The system believes you are ranked lower than your actual skill level.
If your LP is significantly higher than your MMR: You will gain less LP for wins and lose more LP for losses. The system believes you are ranked higher than your actual skill level.
If your LP is close to your MMR: Your LP gains and losses will be relatively balanced.
The Impact of Win/Loss Streaks
Win streaks can significantly boost your MMR, especially if you're winning against opponents with higher MMR. This can lead to larger LP gains, allowing you to climb divisions more quickly. Conversely, losing streaks will decrease your MMR and result in smaller LP gains and larger LP losses.
Promotional Series
Promotional series (Best of 3 or Best of 5) occur when you reach 100 LP in a division. These series are designed to test your ability to maintain your rank. If your MMR is significantly higher than the division you're trying to promote from, you might skip divisions entirely.
Tips for Understanding and Improving MMR
- Focus on Winning: The most direct way to improve your MMR is to consistently win games.
- Play Consistently: Avoid long breaks from ranked play, as your MMR can become less accurate over time.
- Play Your Best: Focus on improving your individual performance, even in losses.
- Don't Obsess Over It: While understanding MMR is helpful, don't let it become a source of frustration. Focus on playing well and the system will eventually place you where you belong.
MMR is the engine that drives the matchmaking system in League of Legends. By understanding its principles, you can better navigate the ranked ladder and appreciate the mechanics behind your progression.