Event: Division 2

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Opponent Rating Result
Shane Cooksey 1457 0 - 1
R (Bob) Hillman 1246 1 - 0
Ethan Heise-Patel 1275 0 - 1
Peter Gavin 1441 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1155 = (5419 + 400 * (1 - 3)) / 4)

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