Event: Division 2

Opponent Rating Result
Andrew M Pridding 2178 0 - 1
David C Okike 2251 ½ - ½
John H Hodgson 2042 ½ - ½
Au Adriel 1991 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1916 = (8462 + 400 * (0 - 2)) / 4)

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