Event: 2023 Manx Cup

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Opponent	Rating	Result
James V Hodgson	1537	1 - 0
Neil T Davies	1898	½ - ½
Keith Allen	2135	0 - 1

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1857 = (5570 + 400 * (1 - 1)) / 3)