Event: Silver Rook

PDF Excel

Opponent	Rating	Result
Aart Gehrels	1084	0 - 1
Steve DG Huxley	1750	0 - 1
Robin F Browne	1778	0 - 1

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

1137 = (4612 + 400 * (0 - 3)) / 3)