Event: Yorkshire u18s Team Championship - Division 2

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Opponent	Rating	Result
Kirin Harrington	1455	0 - 1
Benjamin Layton	1181	0 - 1
Sofia Daysh	1062	0 - 1
Sienna Xu	1027	0 - 1
Michael Ingleby	939	0 - 1
David Tarasenko	942	1 - 0
Muhammad Aamir	1090	0 - 1
James Parfitt	1180	0 - 1

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

810 = (8876 + 400 * (1 - 7)) / 8)