Event: Durham League Division B

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Opponent	Rating	Result
Jan Berssenbruegge	0	1 - 0
Jason Robson	1465	1 - 0
Deborah Edmundson	1444	½ - ½
Sebastian Palucha	1317	½ - ½
Benjamin Perryman	1599	0 - 1
Ian Hunter	1345	1 - 0
Geoff Raw	1376	1 - 0
Barry Edgar	1587	0 - 1
Nick Tadd	1177	1 - 0

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

1390 = (11310 + 400 * (5 - 2)) / 9)