Event: Portsmouth Club Championship

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Opponent	Rating	Result
Jack Vorakhanh	1040	1 - 0
Harit Bhatt	0	1 - 0
William Bradley	1853	0 - 1

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

1098 = (2893 + 400 * (2 - 1)) / 3)