Event: Folkestone Club Championship

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Opponent	Rating	Result
Robert Twigg	1451	0 - 1
Vincent Larson	1323	1 - 0
Harrison Pitchford	1357	0 - 1
Rob Bromage	0	½ - ½
Chris Cummins	1159	1 - 0
Matt Davies	1104	1 - 0
Tim Waggott	1253	1 - 0

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

1207 = (7647 + 400 * (4 - 2)) / 7)