Event: OTB Club Championship

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Opponent	Rating	Result
Huw D Jacob	1645	½ - ½
John Cawdery	2068	0 - 1
Ian D Hunnable	1913	0 - 1
Joseph Rosenberg	1548	0 - 1
Alistair J M Taylor	1500	0 - 1
Paul Read	1295	1 - 0
A Fin O'Regan	1097	1 - 0

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

1467 = (11066 + 400 * (2 - 4)) / 7)