Event: B&DCL Div 5

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Opponent	Rating	Result
Anthony D Pritchard	1653	0 - 1
Andy Hewitt	1400	0 - 1
Roger D Howell	1463	0 - 1
John Beasant	1399	1 - 0
Dan Ursell	1246	0 - 1
Greta Lindsay	1315	1 - 0
David F Burt	1339	1 - 0
Brian Hilton	1332	0 - 1

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

1293 = (11147 + 400 * (3 - 5)) / 8)