Event: Easter Rapidplay

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Opponent Rating Result
Neil Sotheby 1152 1 - 0
Ollie Walton 1317 1 - 0
Janos Mehes 1500 0 - 1
Richard Stevenson 1177 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1287 = (5146 + 400 * (2 - 2)) / 4)

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