Event: Internal Standardplay

Opponent Rating Result
John Slusar 1788 0 - 1
John Slusar 1788 0 - 1
Stephen C Pride 1647 0 - 1
Paul Mead 1403 1 - 0
Lilia Irene Giorgetta Belvedere 1241 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1493 = (7867 + 400 * (2 - 3)) / 5)

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