Event: Division 1

PDF Excel

Opponent	Rating	Result
John Mildenhall	1990	0 - 1
Simon Walton	1660	½ - ½
Roger Threlfall	1720	½ - ½
Peter Willett	1795	½ - ½

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

1691 = (7165 + 400 * (0 - 1)) / 4)