Event: Division 1

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Opponent Rating Result
Peter J Kirby 2058 ½ - ½
Nigel K Hosken 2034 ½ - ½
Duncan D Grossett 2023 ½ - ½
Matthew DJ Wilson 1937 1 - 0
Ron Usharovsky 1964 1 - 0
David I Tipper 1759 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2163 = (11775 + 400 * (3 - 0)) / 6)

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