Event: Minor

Opponent Rating Result
Gary Shelley 1377 1 - 0
Abu Hasan 1395 1 - 0
Keith A Hylands 1365 0 - 1
Winston Qiu 1264 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1550 = (5401 + 400 * (3 - 1)) / 4)

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