Event: Online Division 1

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Opponent Rating Result
Brian G Whyte 1970 ½ - ½
Matthew Ryan 0 1 - 0
Peter G Lovatt 1764 0 - 1
Ivor Salter 1550 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1221 = (5284 + 400 * (1 - 2)) / 4)

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