Event: Summer League

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Opponent Rating Result
Jonny Kearney 1332 0 - 1
David Pritchard 1476 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1204 = (2808 + 400 * (0 - 1)) / 2)

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Opponent Rating Result
Paul T Costello 1501 1 - 0
Joe Chan 1609 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1555 = (3110 + 400 * (1 - 1)) / 2)