Event: NCCA League Division 3

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Opponent	Rating	Result
David B Elsey	1389	1 - 0
Evghenii Sevciuc	1610	0 - 1
Bruce M Carman	1484	½ - ½
Matthew A Haines	1342	½ - ½
David C May	1522	0 - 1
Charlie Giggle	1521	0 - 1
Olly Shaw	1526	0 - 1

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

1313 = (10394 + 400 * (1 - 4)) / 7)