Event: Spring OTB Division 4

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Opponent Rating Result
David J Fowler 1665 ½ - ½
Ivan Urwin 1509 1 - 0
Thisumi Jayawarna 1718 ½ - ½
Ondrej Chalupa 1700 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1648 = (6592 + 400 * (1 - 1)) / 4)

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