Event: Rapidplay

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Opponent Rating Result
Adrian O Pickersgill 2054 0 - 1
Adrian O Pickersgill 2054 0 - 1
Michael J Reddie 1660 0 - 1
Michael J Reddie 1660 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1457 = (7428 + 400 * (0 - 4)) / 4)

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