Event: Spring Swiss

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Opponent Rating Result
Merlin Perrow 1297 ½ - ½
Mark Philip Baldock 1450 ½ - ½
Martin Griffin 1522 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1556 = (4269 + 400 * (1 - 0)) / 3)

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