Event: League Division 2

Opponent Rating Result
Ian D Strickland 1646 1 - 0
Peter F Mason 1830 ½ - ½
Jim R Postill 1481 1 - 0
Duncan Stables 1506 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1816 = (6463 + 400 * (2 - 0)) / 4)

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