Event: Division Four

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Opponent	Rating	Result
Matthew Allen	1300	0 - 1
Ken Wise	1518	½ - ½
Kacper Sikorski	1050	0 - 1

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

1023 = (3868 + 400 * (0 - 2)) / 3)