Event: Division 3

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Opponent Rating Result
Emile Kosviner 1270 1 - 0
Stephen Spurgeon 1497 0 - 1
Joseph Penhaligan 1390 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1519 = (4157 + 400 * (2 - 1)) / 3)

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