Event: C Division

Opponent Rating Result
Anthony M Lee 1888 ½ - ½
Martin R Cutts 1587 ½ - ½
Michael Oszczyk 1783 0 - 1
John Kelly 1541 1 - 0
Sithun De Silva 1523 ½ - ½
Tom Gideonse 1576 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1583 = (9898 + 400 * (1 - 2)) / 6)

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