Event: Spring Swiss

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Opponent Rating Result
Mark Philip Baldock 1450 ½ - ½
Costakis Stephanides 1289 1 - 0
Heather Enid Walker 1244 1 - 0
Olly Shaw 1549 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1683 = (5532 + 400 * (3 - 0)) / 4)

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