Event: Reading-Chess-Open

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Opponent Rating Result
Robert G Endres 1420 1 - 0
John Richardson 1763 1 - 0
Samuel Vanstone 1439 ½ - ½
Shruthisriya Ganesh 1517 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1835 = (6139 + 400 * (3 - 0)) / 4)

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