Event: Holly & the Ivy Chess League

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Opponent	Rating	Result
Daniel Czerniuch	1302	½ - ½
Alec Ward	205	0 - 1
Brendan Briggs	92	1 - 0
Brendan Briggs	92	0 - 1
Sean Keddie	0	½ - ½

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

258 = (1691 + 400 * (1 - 2)) / 5)