Event: Division Four

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Opponent Rating Result
Lee E Collier 1780 0 - 1
Paul Joiner 1218 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1499 = (2998 + 400 * (1 - 1)) / 2)

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Opponent Rating Result
Wojciech Slupski 1405 1 - 0
Simon A Jones 1383 0 - 1
Ken Wise 1533 ½ - ½
Joyce H Evans 1073 1 - 0
Kim T Gilbert 1590 ½ - ½
John B Lewis 1477 0 - 1
Muhammed Oguz Isik 1494 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1365 = (9955 + 400 * (2 - 3)) / 7)