Event: Summer League Division 2

Opponent Rating Result
Oscar J Idle 2020 0 - 1
Richard F Hall 1759 ½ - ½
Ionel Dragan 1889 1 - 0
James Luong 1853 0 - 1
Richard E Desmedt 1751 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1774 = (9272 + 400 * (1 - 2)) / 5)

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