Event: Doncaster Handicap League

PDF Excel

Opponent	Rating	Result
John Gibbs	108	0 - 1
John E Beech	126	0 - 1
Martin McGowan	91	½ - ½
Neil S Shaw	115	½ - ½
Mick Henshaw	109	½ - ½

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

-50 = (549 + 400 * (0 - 2)) / 5)