Event: 7th Peter & Peggy Clarke Memorial

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Opponent	Rating	Result
Harvey Cooper	1628	0 - 1
Jack Wills	1651	0 - 1
Michael J Dow	1545	0 - 1
Salli Gosling	1757	1 - 0
Gary Cooper	0	1 - 0

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

1236 = (6581 + 400 * (2 - 3)) / 5)