Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Chris Bailey	1608	0 - 1
Emerys Hillman	1274	1 - 0
Ethan Fenton	1379	1 - 0
Mick Wombell	1507	1 - 0
Tom R W Edwards	1444	½ - ½
Steve Daykin	1380	1 - 0
Nigel Moran	0	½ - ½
Connor Fairfield	1255	1 - 0
Michael W Simmons	1179	1 - 0
Darci Cooper	1287	0 - 1
Harry Heather	1515	0 - 1

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

1366 = (13828 + 400 * (6 - 3)) / 11)