Event: Division 2

Opponent Rating Result
George I Miller 1891 ½ - ½
Robin Brown 1320 1 - 0
Ben Radford 1730 ½ - ½
Brian Crewe 1645 1 - 0
Piotr Zielinski 1616 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1880 = (8202 + 400 * (3 - 0)) / 5)

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