The reason why winning and losing is the highest determining factor to calculate a skill rating adjustment is to incentivize team play. In theory, players who are better team players and works to win the match at any cost should be climbing the ranks. Now at Platinum and lower ranks here is a small factor where personal statistical performance is accounted for (this factor was removed from Diamond and higher ranks starting in season 8). However, that factor, along with the frequency of playtime, and how close you are to the 5000 SR mark, are small factors that go into calculating what SR adjustments are. Learn more about why skill rating adjustments work the way they do by checking out this guide:
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