Event: Division 1

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Opponent Rating Result
Gavyn Cooper 204 ½ - ½
Gavyn Cooper 204 1 - 0
M Paul Townsend 208 1 - 0
Daniel J Staples 179 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

399 = (795 + 400 * (2 - 0)) / 4)

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