Event: Div 2 - Weston Trophy

Opponent Rating Result
Jim Davis 1922 0 - 1
Geoffrey D Brown 1786 1 - 0
Ken A McIntosh 1827 ½ - ½
Andrew Hards 1888 1 - 0
Andrew Hards 1888 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2022 = (9311 + 400 * (3 - 1)) / 5)

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