Event: Durham League Division B

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Opponent	Rating	Result
Deborah Edmundson	1541	½ - ½
Jonathan Sams	1829	½ - ½
Paul Freeman	1497	½ - ½
Owen Temple	1333	½ - ½
Sebastian Palucha	1322	½ - ½
Tom Min	1577	1 - 0
Logan Richardson	1468	0 - 1

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

1510 = (10567 + 400 * (1 - 1)) / 7)