Event: Division Five

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Opponent	Rating	Result
Anthony Rimmington	1536	½ - ½
Andrew Tighe	1524	1 - 0
David J Carpenter	1473	½ - ½
Donald Billows	1403	½ - ½
Peter Nixon	1430	0 - 1
Szymon Dybowski	1352	1 - 0
Tony Plackowski	1252	½ - ½

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

1481 = (9970 + 400 * (2 - 1)) / 7)