Event: SCL Div 4

PDF Excel

Opponent	Rating	Result
Peter Cruddas	1391	0 - 1
Richard J Meredith	1424	0 - 1
David Long	1464	0 - 1
Richard J Meredith	1430	1 - 0
Andrew Dinkele	1287	0 - 1
David Long	1443	½ - ½
Peter Cruddas	1360	½ - ½

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

1228 = (9799 + 400 * (1 - 4)) / 7)