Event: Division 3

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Opponent Rating Result
Antony J Sage 1594 0 - 1
Ed Swann 1362 0 - 1
Vicky Sherley-Price 1370 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1309 = (4326 + 400 * (1 - 2)) / 3)

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