Event: Division 2

Opponent Rating Result
Stephen W Berkley 1761 1 - 0
Tom A Barton 1935 ½ - ½
Andrew Offord 1644 1 - 0
Colin R Ramage 1900 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2110 = (7240 + 400 * (3 - 0)) / 4)

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