Event: Ringwood Rapidplay Open

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Opponent	Rating	Result
Graham J Willetts	1858	1 - 0
Johnathan D Bourne	1920	1 - 0
Roland Bezuidenhout	2012	0 - 1
John P Weatherlake	2087	0 - 1
Richard W Ursell	1765	1 - 0
C Bruce Jenks	2100	1 - 0

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

2090 = (11742 + 400 * (4 - 2)) / 6)