Event: Division 3

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Opponent Rating Result
Stefan Winman 1435 1 - 0
Roger Bray 1568 1 - 0
Mick J Lloyd 1400 0 - 1
David J Barker 1481 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1471 = (5884 + 400 * (2 - 2)) / 4)

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