Event: NSDCA Division 4

Opponent Rating Result
Derek Whitehurst 1469 ½ - ½
Michael Keenan 1326 0 - 1
Finley Thomas 1249 1 - 0
Philip Grocott 1348 ½ - ½
Ken Elinor 1250 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1248 = (6642 + 400 * (1 - 2)) / 5)

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