NA LCS Predictions about

What is is a website that makes predictions about League of Legends -- specifically the NA LCS -- using the Elo rating system.

How does it work?

The elo system determines a rating for every team, and the difference between two teams' ratings gives a prediction of how likely each team is to win. Roughly: for each 400 points' difference, the lower rated team is 10 times less likely to win.

The predictions are made by randomly simulating the remaining unplayed matches in the season 100,000 times, and then counting how many times certain events occurred (e.g. TSM won the summer split) and inferring the likelihood of those events from that.

About the author is written and maintained by Brendan Wallace.

Credit to for their detailed explanations of how they tuned their own elo models.

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