Event: The Chess Centre - Horsforth (Class 1) Junior League

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Opponent	Rating	Result
Fergus McNicol	591	1 - 0
Sasha Povar	0	0 - 1
Hermes Li	473	0 - 1
Toby Black	673	1 - 0
Dhilan Kirby	825	0 - 1
Aryaveer Bhatnagar	711	1 - 0
Fergus McNicol	624	1 - 0
Toby Black	638	1 - 0

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

667 = (4535 + 400 * (5 - 3)) / 8)