Event: Division Five

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Opponent	Rating	Result
Wojciech Slupski	1481	½ - ½
Peter Nixon	1466	0 - 1
Ian M Truscott	1618	½ - ½
Dalmar Guleid	1625	0 - 1
Stephen Smithson	1375	½ - ½
Rob Stevens	1395	½ - ½
Eddy Porton	916	0 - 1

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

1239 = (9876 + 400 * (0 - 3)) / 7)