Event: WMA Spring League Division 1

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Opponent	Rating	Result
Rob Sutton	0	0 - 1
Ian Ellis	0	1 - 0
David Smith	1615	1 - 0
David Flynn	1840	0 - 1
Praveen Joy	0	1 - 0
Rob Sutton	0	0 - 1
Ian Ellis	0	1 - 0
David Smith	1615	1 - 0
David Flynn	1840	0 - 1
Praveen Joy	0	1 - 0

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

771 = (6910 + 400 * (6 - 4)) / 10)