Event: Division 3

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Opponent	Rating	Result
Michael Kowalczyk	1350	0 - 1
Craig Bradshaw	1361	1 - 0
Sid McDonald	1431	0 - 1
David Cattermole	1593	0 - 1
Christopher Suckling	1378	1 - 0
Greg Hart	1160	½ - ½
Raf Calumpiano	1223	1 - 0
Steven Hamblyn	1100	1 - 0

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

1375 = (10596 + 400 * (4 - 3)) / 8)