Event: 2023 Manx Summer Weekend

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Opponent	Rating	Result
Henrik Fabri	1936	½ - ½
Kyle Cross	1445	1 - 0
Zahed Miah	1838	1 - 0
Keith Allen	2144	0 - 1
Silvester Sipos	1950	0 - 1

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

1863 = (9313 + 400 * (2 - 2)) / 5)