Event: HCA Women's Individual Championship

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Opponent	Rating	Result
Gillian A Moore	1675	0 - 1
Rose Saunders	1090	1 - 0
Helen Archer-Lock	1705
Megan Birch	1560	1 - 0
Gillian A Moore	1691
Rose Saunders	1078
Helen Archer-Lock	1672
Megan Birch	1559

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

1575 = (4325 + 400 * (2 - 1)) / 3)