Event: NSDCA Division 4

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Opponent	Rating	Result
Charlie Steele	1400	0 - 1
Derek Whitehurst	1469	½ - ½
Alan E Thomason	1709	½ - ½
Julian P Cook	1352	1 - 0
Raymond F Rhodes	1245	1 - 0
Cristian-Gabriel Dragan	1384	1 - 0

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1560 = (8559 + 400 * (3 - 1)) / 6)