Event: WMA Spring League Division 2

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Opponent	Rating	Result
James E O'Dell	1832	0 - 1
Elis Denele Dicen	1783	½ - ½
John Foxall	1615	0 - 1
Tony Shaw	1520	½ - ½
Praveen Joy	1703	½ - ½
AD (Tony) Williams	1817	½ - ½
James E O'Dell	1832	0 - 1
Elis Denele Dicen	1783	0 - 1
John Foxall	1615	1 - 0
Tony Shaw	1520	½ - ½
Praveen Joy	1703	½ - ½

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

1593 = (18723 + 400 * (1 - 4)) / 11)