Event: Division Five

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Opponent Rating Result
Anthony Rimmington 1536 0 - 1
Penny A Wood 1468 1 - 0
David Wilkinson 1400 0 - 1
Lawrence F Hayden 1645 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1312 = (6049 + 400 * (1 - 3)) / 4)

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