Event: Division 1

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Opponent	Rating	Result
Steve J Horrocks	1957	0 - 1
Andrew A Clarkson	1995	0 - 1
Jonathan Howarth	1552	1 - 0

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

1701 = (5504 + 400 * (1 - 2)) / 3)