Event: Worcestershire Challengers' League

PDF Excel

Opponent	Rating	Result
Julie C Wilson	1800	1 - 0
Phil Maddocks	1734	0 - 1
George Charman	1785	0 - 1
Scott Russell	1817	½ - ½
Michael J Kitchen	1482	0 - 1
Julie C Wilson	1800	0 - 1
Robert Davies	1715	1 - 0
T Giles Stanton	1585	0 - 1

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

1565 = (13718 + 400 * (2 - 5)) / 8)