Event: Division Four

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Opponent Rating Result
Aaron Norton 1544 1 - 0
David M Cotterell 1546 ½ - ½
Robert Davies 1717 ½ - ½
Dominic P Heining 1645 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1613 = (6452 + 400 * (1 - 1)) / 4)

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