Event: Ivan Gromov Online Schools Chess League

PDF Excel

Opponent	Rating	Result
Mark Somers	1693	0 - 1
Ralph Matta	0	1 - 0
Tong Wu	1700	0 - 1
Michael Domarkas	1356	0 - 1

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

987 = (4749 + 400 * (1 - 3)) / 4)