Event: Division 3

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Opponent	Rating	Result
Julian Tarwid	1700	½ - ½
Michael H Cowley	1630	0 - 1
Dan Watson	1278	1 - 0
Anthony D Robinson	1473	0 - 1
Michael David (Mick) M Adams	1263	½ - ½
Alistair Geear	1500	0 - 1

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

1341 = (8844 + 400 * (1 - 3)) / 6)