Event: NCCA League Division 4

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Opponent	Rating	Result
Yuming Bian	1350	0 - 1
Murray Raff	1450	0 - 1
Martin Griffin	1500	½ - ½
Tony Piper	1353	0 - 1
David L Jones	1479	0 - 1
Ken Farquhar	1514	0 - 1
Tony R Larner	1472	½ - ½

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

1160 = (10118 + 400 * (0 - 5)) / 7)