Event: TCL Division A

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Opponent	Rating	Result
Bradley Holland	1543	½ - ½
Piran Wills	1552	½ - ½
Piotr Ruszelak	1809	0 - 1
Andrew S Kinder	1804	0 - 1
James Schofield	1908	0 - 1
Clifford B Peach	1505	1 - 0
John E Allen	1597	0 - 1

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

1503 = (11718 + 400 * (1 - 4)) / 7)