Event: Division 1

Opponent Rating Result
John Jarmany 2185 0 - 1
Howard R Hughes 2181 0 - 1
Steven H Barnes 1910 0 - 0
John Jarmany 2180 0 - 1
Martyn Hamer 2111 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1864 = (8657 + 400 * (0 - 3)) / 4)

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