Event: E Division

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Opponent	Rating	Result
Chris Lysons	1409	0 - 1
Samarth Misra	1250	0 - 1
(John) Jack Donegan	1310	1 - 0
Lewis Sheehy	1361	½ - ½
Lawrence Harold	1446	0 - 1
Edward Chu	1227	0 - 1
Aram Marsh	1416	½ - ½
Bryony Eccleston	1420	0 - 1

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

1155 = (10839 + 400 * (1 - 5)) / 8)