Event: League

PDF Excel

Opponent	Rating	Result
Steven Lewis	161	1 - 0
Denis Georgiou	153	0 - 1
Mike Dew	110	1 - 0
Denis Georgiou	156	1 - 0
Mike Dew	108	½ - ½

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

298 = (688 + 400 * (3 - 1)) / 5)