Event: Division One

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Opponent	Rating	Result
Mike J Groombridge	1713	1 - 0
Martin D Smyth	1938	0 - 1
Oluwole Ogeleye	0	½ - ½
Chris C McConkey	1773	1 - 0
Andy Ambrose	1758	½ - ½
Steve F Tarr	1828	½ - ½
Raymond Carpenter	1992	½ - ½
Edward Ng	1900	1 - 0

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

1713 = (12902 + 400 * (3 - 1)) / 8)