Event: Woodhouse Cup

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Opponent	Rating	Result
David Teague	1732	1 - 0
Anastasios Nezis	1670	0 - 1
Maksym Larchikov	2023	½ - ½
Anthony Ibbitson	1756	½ - ½
Rob Lockwood	1694	0 - 1
Richard Wilson	1603	1 - 0
Stylianos Oikonomou	1819	½ - ½

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

1757 = (12297 + 400 * (2 - 2)) / 7)