Frequently Asked Questions

Answers to all of your questions about the METAsrc League of Legends site.
A: We are very glad to hear that you like the site! If you want to show your support you can remove our domain from your AdBlocker if you have one; ads help keep this site free and help support adding new features as well as growing server and maintenance costs. Don't forget to share with your friends, like us on Facebook and follow us on Twitter.
A: All of our data is collected from the Riot Games API.
A: Our data gets refreshed about once an hour.
A: We only collect and display data from games played on the most recent patch.
A: No, when a new patch comes out we wait until we have gathered a sufficient amount of data before we update the data displayed on the site.
A: We always make sure that we have analyzed a statistically relevant number of games. The number may vary from game to game, patch to patch, region to region, and mode to mode, but we do our best to make sure we update to the new patch as quickly as possible, while still maintaining the quality of data and statistics you have come to expect.
A: The tier lists are created by doing a statistical analysis on the data that we collect. We assign a score based on several factors and then derive the tiers based on that score.
A: Many factors are taken into account for calculating the score, and they vary by game, but generally we look at things like Win Rate, Pick Rate, KDA, etc.. We also weigh higher ranked game data more heavily. This means that a Diamond win is worth more than a Bronze win, for example.
A: The scores are calculated in such a way that ensures a rough Gaussian Distribution. We then place things into tiers based on how many standard deviations above or below the mean their score is. For example, God tier is 3 standard deviations above the mean, while the Bad tier is 3 standard deviations below it
A: These ranges indicate what the score needs to be in order to be in that tier.
A: Things are placed in their tiers solely based on their calculated scores.
A: That's great! We are glad you are able to do well where others have failed, however, the scores are based on average stats, meaning if most people do not have great success with something it will be scored lower.
A: The numbers below things on the guide pages are the win rates for that thing within the context of the guide. That is to say if you follow the guide for that particular section, you should win roughly that often.
A: We choose the top things for each section based on how often people who win their games make the same choice.
A: That's great! We are glad you have found something that works well for you, however, we base what we show off of what the majority of players who do well choose. Your build not being there simply means it is not a very common build, or others are not very successful with it.
A: That number represents how much higher or lower than 50% the win rate is within the context of the current guide page when against, or teamed with the other thing. We use 50% as the base because in a perfectly balanced game, everything should have a 50% win rate against each other.