Event: EJCOA South Yorkshire U10

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Opponent	Rating	Result
Wang Weitong	0	1 - 0
Amiruth Anbu	751	1 - 0
Linda Cao	822	½ - ½
William Hart	921	0 - 1
Yiwen Cao	624	1 - 0

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

784 = (3118 + 400 * (3 - 1)) / 5)