Event: Division 4

Opponent Rating Result
Peter J Horlock 1685 1 - 0
Michael J Lord 1600 ½ - ½
Archie Warren 1376 1 - 0
Robert G Page 1641 0 - 1
Alex Waters 1630 0 - 1
Roger P Newman 1437 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1628 = (9369 + 400 * (3 - 2)) / 6)

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