Event: Division 1

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Opponent Rating Result
Venkataramanan Tiruchirapalli 2309 0 - 1
Nicholas A Ward 2030 ½ - ½
Michael W Healey 2207 1 - 0
John M Emms 2448 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2149 = (8994 + 400 * (1 - 2)) / 4)

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