Event: Ringwood Rapidplay Open

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Opponent	Rating	Result
Richard W Ursell	1765	1 - 0
Richard M Webb	2238	1 - 0
Oscar Garcia	2080	1 - 0
Matthew J Turner	2478	0 - 1
Nwachukwu Okoli	2059	1 - 0
John P Weatherlake	2087	1 - 0

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

2385 = (12707 + 400 * (5 - 1)) / 6)