Event: Lytham Summer Tournament

PDF Excel

Opponent	Rating	Result
Peter A Wilson	145	1 - 0
John Regan	112	1 - 0
Raymond J Pomeroy	120	1 - 0
Colin Wilks	102	1 - 0
Roy Ellames	198	0 - 1

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

375 = (677 + 400 * (4 - 1)) / 5)