Event: Summer League

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Opponent	Rating	Result
Matthew Hammond	1714	0 - 1
Alun Richards	1781	0 - 1
Peter Nelson	1422	½ - ½
Graham K Brown	1814	0 - 1
Robert Ashworth	1867	0 - 1
Matthew Hammond	1714	0 - 1
Alun Richards	1781	½ - ½
Peter Nelson	1422	0 - 1
Graham K Brown	1814	0 - 1
Robert Ashworth	1867	0 - 1

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

1400 = (17196 + 400 * (0 - 8)) / 10)