Event: Division 2

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Opponent	Rating	Result
Ben Taylor	1457	1 - 0
Kailash Narendran	0	0 - 1
Ronnie Sutton	1014	1 - 0
Keith Melling	1106	½ - ½
Ian Mitchell	1601	0 - 1
Kevin Miller	1461	1 - 0
Natalie Haydock	1130	1 - 0
William T Jones	866	1 - 0

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

1229 = (8635 + 400 * (5 - 2)) / 8)