Event: B&DCL Div 4

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Opponent	Rating	Result
Joseph Wikramaratna-Clarke	113	1 - 0
Michael Tew	82	1 - 0
Paul Sandy	106	0 - 1
Chris JF Ambrose	102	1 - 0
Paul Sandy	106	0 - 1
David W Lewis	96	1 - 0
Paul Stanley	84	1 - 0
Roger D Howell	85	1 - 0

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

297 = (774 + 400 * (6 - 2)) / 8)