Event: Division Two

Opponent Rating Result
Alex D Pready 1768 ½ - ½
Robert Marks 1753 ½ - ½
John F Fahy 1749 0 - 1
Peter W Lawrence 1672 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1536 = (6942 + 400 * (0 - 2)) / 4)

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