Event: Division 4

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Opponent Rating Result
Mark Payne 1769 ½ - ½
Lee Savill 1563 1 - 0
Michael Moura 1772 0 - 1
Liam Ireland 1705 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1702 = (6809 + 400 * (1 - 1)) / 4)

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