Event: Wiseman-Hurley Open 2023

Opponent Rating Result
Roger G Williamson 2233 0 - 1
Brian Butterworth 1575 1 - 0
Tom Plews 1513 1 - 0
Phil Ramsey 1837 ½ - ½
Michael Sutton 1853 0 - 1
Shay Hanlon 1644 0 - 1
John Pickering 1404 1 - 0
Peter Mellor 1695 ½ - ½
Artur Hrabchak 1751 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1767 = (15505 + 400 * (4 - 3)) / 9)

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