Event: Div 2 - Weston Trophy

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Opponent	Rating	Result
George Swanson	1640	0 - 1
Callum Cosens	2073	0 - 1
Lance Kennedy	1491	½ - ½
Brendan Stoneham	1462	0 - 1
Barry Williams	1640	0 - 1
Mattiangelo D'Agnese	1582	0 - 1
Rohan Rawat	0	0 - 1

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

1070 = (9888 + 400 * (0 - 6)) / 7)