Event: NSDCA Division 4

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Opponent	Rating	Result
Benjamin R Shiers	1331	½ - ½
Neville S Jones	1451	½ - ½
David S Johnson	1508	1 - 0
Derek Whitehurst	1505	1 - 0
Kobus Nienaber	1461	0 - 1
Pawel Stanny	1448	0 - 1
Benjamin R Shiers	1331	½ - ½

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

1434 = (10035 + 400 * (2 - 2)) / 7)