Event: NSDCA Division 2

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Opponent	Rating	Result
James Richard Hanlon	1741	0 - 1
Alan E Thomason	1707	0 - 1
Sean Tavener	1786	0 - 1
Joe Moxon	1558	0 - 1
Neville Layhe	1683	1 - 0
Lee Spackman	1519	0 - 1
Kenneth J McNulty	1719	0 - 1
David Stubbs-Jeffries	1400	1 - 0
Daryl Skerratt	1100	1 - 0
Chinenye Basil-Nwachuku	1669	1 - 0
Neville Layhe	1683	1 - 0
Kenneth J McNulty	1719	½ - ½

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

1574 = (19284 + 400 * (5 - 6)) / 12)