Event: Division B

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Opponent	Rating	Result
Mark R A Murrell	1809	0 - 1
Rajyeshwar Mathompat	1704	0 - 1
Sotiris Papadakis	1617	½ - ½
Graham J Kershaw	1712	1 - 0
Liam Warder	0	0 - 1
Stephen W Berkley	1723	0 - 1
Mark D McWilliams	1502	1 - 0

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

1324 = (10067 + 400 * (2 - 4)) / 7)