Event: Division 2

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Opponent Rating Result
Dave Hodkinson 1619 ½ - ½
David J Friend 1627 ½ - ½
Steve Whatmore 1820 1 - 0
Leslie Andrews 1511 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1744 = (6577 + 400 * (1 - 0)) / 4)

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