Event: Weymouth U1550 2023

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Opponent	Rating	Result
Paul Foster	1479	0 - 1
Dave Williams	1389	0 - 1
Michael R Pope	1468	0 - 1

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

1045 = (4336 + 400 * (0 - 3)) / 3)