Event: Summer League (Pool B)

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Opponent	Rating	Result
Agatha Moore	1307	0 - 1
Noman Baloch	1396	0 - 1
Robert Lacey	1467	0 - 1
David Carter	1516	0 - 1
Agatha Moore	1307	1 - 0
David Carter	1516	0 - 1
Robert Lacey	1467	0 - 1
Noman Baloch	1396	½ - ½

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

1172 = (11372 + 400 * (1 - 6)) / 8)