Event: LADDER

PDF Excel

Opponent	Rating	Result
David Bradley	1364	0 - 1
Paul W O'Brien	1637	0 - 1
Keith Guinness	1649	1 - 0

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

1417 = (4650 + 400 * (1 - 2)) / 3)