Event: NCCA League Division 4

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Opponent	Rating	Result
David P Jones	1460	1 - 0
Brian J Cunningham	1572	0 - 1
Bruce M Carman	1490	0 - 1
Bruce M Carman	1491	½ - ½
Edward Hackford	1544	0 - 1
Dennis G Driscoll	1330	½ - ½

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

1348 = (8887 + 400 * (1 - 3)) / 6)