Event: Division 2

Opponent Rating Result
Raf Calumpiano 1457 0 - 1
David Cattermole 1622 ½ - ½
Stephen C Pride 1619 0 - 1
Robert L Jones 1652 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1288 = (6350 + 400 * (0 - 3)) / 4)

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