Event: Division 4

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Opponent	Rating	Result
Martin J Steel	1578	0 - 1
Oskar Rudczenko	1120	1 - 0
Brian Wood	1143	0 - 1
James Page	1200	0 - 1
Oskar Rudczenko	1120	1 - 0
Chris Brown	1394	1 - 0
George Gowers	0	1 - 0
Madhav Eradi	1300	0 - 1

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

1107 = (8855 + 400 * (4 - 4)) / 8)