Event: HCA Women's Individual Championship

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Opponent	Rating	Result
Rose Saunders	1084	1 - 0
Helen Archer-Lock	1705
Rosamund Hale	1497	0 - 1
Gillian A Moore	1678	0 - 1
Rose Saunders	1078
Helen Archer-Lock	1672
Rosamund Hale	1502
Gillian A Moore	1691

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

1286 = (4259 + 400 * (1 - 2)) / 3)