Event: YJCA Grand Prix Event 1 Minor

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Opponent	Rating	Result
George Sparrow	0	0 - 1
Freddie Copland	0	0 - 1
Esah Butt	0	0 - 1
Charlie Marsden	0	0 - 1
Shivin Mangal	0	1 - 0

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

-240 = (0 + 400 * (1 - 4)) / 5)