Event: Silver Rook

PDF Excel

Opponent	Rating	Result
Mike Edbury	1576	0 - 1
David Summerland	1515	1 - 0
Alex Burke	1466	½ - ½
Anthony A Gilpin	1798	½ - ½

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

1589 = (6355 + 400 * (1 - 1)) / 4)