Event: Walker Shield

PDF Excel

Opponent	Rating	Result
Leon A Garfield	1480	½ - ½
Mark Towlson	1540	1 - 0
Malcolm Snashall	1474	0 - 1

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

1498 = (4494 + 400 * (1 - 1)) / 3)