Event: Weymouth U1850 2023

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Opponent	Rating	Result
Ronnie Burton	1774	½ - ½
Freddie Pick	1755	½ - ½
Robert A Lanzer	1782	½ - ½
Tim Jones	1813	½ - ½
Ed Craddock	1768	0 - 1

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

1698 = (8892 + 400 * (0 - 1)) / 5)