Event: Doncaster Bell Trophy

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Opponent	Rating	Result
Steven Devonshire	1672	0 - 1
John Smart	1594	½ - ½
Ken Hunter	1754	1 - 0
Alan Bramall	1687	½ - ½
Steven Devonshire	1672	½ - ½
John Smart	1594	0 - 1
Ken Hunter	1754	0 - 1
Alan Bramall	1687	½ - ½

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

1577 = (13414 + 400 * (1 - 3)) / 8)