Event: Open Rapid-play

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Opponent	Rating	Result
Matthew J Harborne	2058	1 - 0
Daniel M Lambourne	2125	½ - ½
Tim A Lane	1930	1 - 0
Christopher D Lewis	1867	0 - 1
Matthew J Harborne	2058	0 - 1
Daniel M Lambourne	2125	0 - 1
Tim A Lane	1930	0 - 1
Christopher D Lewis	1867	1 - 0

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

1945 = (15960 + 400 * (3 - 4)) / 8)