Event: N&N Improvers League

PDF Excel

Opponent	Rating	Result
Paul Rees	0	1 - 0
Malcolm Clarke	0	1 - 0
Melissa Jermey	0	½ - ½
Rhys Howard	0	1 - 0
Wayne Johnson	0	1 - 0

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

320 = (0 + 400 * (4 - 0)) / 5)