Event: Club Championship

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Opponent	Rating	Result
Martin J Chadwick	1275
Robert Perry	1197
Roger Coleman	1212	0 - 1
Gwyn Price	1100
Ken Elinor	1281	0 - 1
Martin J Chadwick	1285
Robert Perry	1203
Roger Coleman	1212
Gwyn Price	1100	1 - 0
Ken Elinor	1261

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

1064 = (3593 + 400 * (1 - 2)) / 3)