Event: Challenge Competition 1

PDF Excel

Opponent	Rating	Result
Roland Rattray	1606	1 - 0
Roland Rattray	1584	1 - 0
David C Curtis	1590	½ - ½
J Chris Baldry	1293	1 - 0
David C Curtis	1575	0 - 1

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

1690 = (7648 + 400 * (3 - 1)) / 5)