Event: 4-Board Division 1

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Opponent Rating Result
Alec Grice 1628 0 - 1
John Scotter 1477 ½ - ½
Thomas L Hackett 1857 0 - 1
Ewan Black 1539 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1525 = (6501 + 400 * (1 - 2)) / 4)

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