Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Benjamin Layton	1226	0 - 1
Thomas Hancock	1579	½ - ½
David Matthews	0	1 - 0
Connor Fairfield	1255	0 - 1
Darci Cooper	1287	0 - 1
Charlie Standley	0	0 - 1
Alex Thorp	1343	½ - ½

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

784 = (6690 + 400 * (1 - 4)) / 7)