Event: Division 4

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Opponent	Rating	Result
Aryan Shankar	1412	1 - 0
David Gaskell	1188	0 - 1
Stuart Andrews	1169	0 - 1

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

1123 = (3769 + 400 * (1 - 2)) / 3)