Event: Mini League

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Opponent Rating Result
S Neil Bolton 1338 1 - 0
Michael Gittens 1450 1 - 0
Steven Hodgson 1375 1 - 0
Ivor Timmis 1479 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1711 = (5642 + 400 * (3 - 0)) / 4)

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