Event: Division 1

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
David I Tipper 1759 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2122 = (9811 + 400 * (2 - 0)) / 5)

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