Event: Durham League Division A

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Opponent	Rating	Result
David J Walker	2290	0 - 1
Zachary Cansdale	2026	½ - ½
Kevin J Wilson	1955	0 - 1
Zachary Cansdale	2026	0 - 1
David P Mooney	2241	½ - ½
Douglas J Smith	1961	½ - ½

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

1883 = (12499 + 400 * (0 - 3)) / 6)