Event: IM Brown

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Opponent Rating Result
Steve Hughes 92 1 - 0
David Glossop 128 1 - 0
Phillip J Battye 134 1 - 0
Mick Beavers 80 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

509 = (434 + 400 * (4 - 0)) / 4)

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