Event: Open

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Opponent	Rating	Result
Donald J Mason	195	1 - 0
Tomasz Sygnowski	202	0 - 1
Amrik J Singh	175	1 - 0
Moin Uddin	144	1 - 0
Donald J Mason	195	0 - 1
Tomasz Sygnowski	202	1 - 0
Amrik J Singh	175	1 - 0
Moin Uddin	144	1 - 0

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

379 = (1432 + 400 * (6 - 2)) / 8)