Event: Summer League Section 1

Opponent Rating Result
David J Gibson 1541 ½ - ½
Jack Walker 1928 ½ - ½
Andrew D Bettley 1799 ½ - ½
Thomas L Hackett 1727 0 - 1
Paul A Allison 1698 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1579 = (8693 + 400 * (0 - 2)) / 5)

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