Event: Division 2

Opponent Rating Result
Lee Walls 1619 ½ - ½
David Williams 1734 0 - 1
Jimmy Gallagher 1581 ½ - ½
Philip Delbridge 1430 ½ - ½
C Phillip Fisher 1555 1 - 0
Andrew Korzhov 0 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1387 = (7919 + 400 * (2 - 1)) / 6)

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