Event: A Division

Opponent Rating Result
Ethan Norris 2062 ½ - ½
Aidan M Rawlinson 2240 ½ - ½
Andrew I Wilson 2026 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2243 = (6328 + 400 * (1 - 0)) / 3)

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