Event: NSDCA Division 3

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Opponent	Rating	Result
Stephen J Emmerton	1564	½ - ½
David P Price	1584	0 - 1
Nigel Gardner	1565	½ - ½
Lee Spackman	1443	½ - ½
David M Rose	1533	0 - 1
Ebube Christian	1538	0 - 1
David M Rose	1533	0 - 1
Nigel Gardner	1560	½ - ½
Neville S Jones	1451	0 - 1

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

1308 = (13771 + 400 * (0 - 5)) / 9)