Event: Division 2

Opponent Rating Result
Alex D Pready 1788 ½ - ½
Mike J Groombridge 1686 ½ - ½
Ethan Heise-Patel 1275 1 - 0
David J Barker 1481 0 - 1
Andrew E Taylor 1582 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1482 = (7812 + 400 * (1 - 2)) / 5)

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