Event: SCL Div 4

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Opponent	Rating	Result
Liam Devlin	1594	½ - ½
Thomas Philidor	1723	1 - 0
Philip Tarrant-Edwards	1591	1 - 0
John Schonenberger	1502	0 - 1
Liam Devlin	1614	½ - ½
Oliver Williamson	1591	½ - ½
William Purkiss	1752	½ - ½

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

1681 = (11367 + 400 * (2 - 1)) / 7)