Event: SCL Div 2

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Opponent	Rating	Result
Graham Stuart	1786	0 - 1
David R Agostinelli	1705	½ - ½
Martin GS Buckley	1964	0 - 1
Stephen O'Toole	1790	0 - 1
Kevin G Steele	1775	½ - ½
Timothy J Chapman	1705	½ - ½
Steven Edwin Jones	1781	0 - 1

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

1558 = (12506 + 400 * (0 - 4)) / 7)