Event: Division 2

Opponent Rating Result
Julie L Denning 1595 0 - 1
William F Tracey 1555 1 - 0
Douglas Blythe 0 ½ - ½
William F Tracey 1565 1 - 0
Adrian DP Waldock 1675 ½ - ½
Robert Smart 1351 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1357 = (7741 + 400 * (2 - 1)) / 6)

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