Event: John Robinson Trophy

PDF Excel

Opponent	Rating	Result
Ioan Strugar	1425	0 - 1
Ian M Andrews	1347	1 - 0
George Gowers	1570	½ - ½

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

1447 = (4342 + 400 * (1 - 1)) / 3)