Event: NCCA League Division 4

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Opponent	Rating	Result
Olly Shaw	1300	0 - 1
Aidan Palmer	1500	0 - 1
Olly Shaw	1526	½ - ½
Brian J Cunningham	1596	0 - 1
Mark Nicholls	1482	1 - 0
James Woodburn	1369	1 - 0
Tony Piper	1410	1 - 0
Tony R Larner	1475	0 - 1

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

1407 = (11658 + 400 * (3 - 4)) / 8)