Event: North London League

Opponent Rating Result
Dylan Mcleish 0 1 - 0
Avril Chloe Hsu 1458 ½ - ½
Eliya Istari 1293 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1184 = (2751 + 400 * (2 - 0)) / 3)

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