Event: Division 2

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Opponent	Rating	Result
Graham K Brown	148	0 - 1
Ronald C Andriessen	123	0 - 1
Ronald C Andriessen	124	½ - ½
John B Harris	115	0 - 1
Andrew Gibson	139	0 - 1
Patrick Baker	134	½ - ½
Tony C Norris	132	½ - ½
Graham D Neville	151	½ - ½
Chris Haynes	140	½ - ½
Patrick Baker	133	0 - 1

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

-66 = (1339 + 400 * (0 - 5)) / 10)