Event: Division 3

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Opponent Rating Result
Stephen Haggas 1563 1 - 0
David Hewitt 0 0 - 1
Derek Ludlam 1550 1 - 0
Simon Jones 1401 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1329 = (4514 + 400 * (3 - 1)) / 4)

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