i don't know what algorithm they use. a couple of games, i played like a god and they only gave me a+/s rank (i haven't gotten s+ yet). one game i was a feeder and still got an a+
the faq says this:
It’s based on the champion and role that you just played in a game. So, for example, we look at Annie mid differently to Annie support. We take a series of performance metrics and compare how you do to all other players in your region in your champion / position combination. It is percentile driven - so earning a high score means you performed in the top x% of players on that champ in that position. The grade itself governs the point gains.
Last edited by shuriken; 05-08-2015 at 03:10 PM..
Reason: Automerged Doublepost
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