Event: Div 4 - Athenaeum Cup

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Opponent	Rating	Result
Kevin Guo	1633	0 - 1
Chris Bailey	1608	0 - 1
Rishab Cammanchery Krishnan	1651	0 - 1
Ethan Fenton	1379	½ - ½
Dave Cook	1532	1 - 0
Silas Dowrick-Hammond	0	1 - 0
Kirin Harrington	0	1 - 0

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

1115 = (7803 + 400 * (3 - 3)) / 7)