Event: Division Four

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Opponent	Rating	Result
Fred S Dickson	1614	0 - 1
Brian Allsop	1335	1 - 0
Kevin J Moore	1342	1 - 0
Thomas Sanderson	1358	0 - 1
Andrew Powell	1490	0 - 1
Ken Wise	1515	½ - ½
Stefan Winman	1466	1 - 0
Robert (Bob) Carter	1403	0 - 1

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

1390 = (11523 + 400 * (3 - 4)) / 8)