Event: Open County Championship

Opponent Rating Result
Phil Hopkins 2088 1 - 0
Norman A Hutchinson 2044 1 - 0
Gary Kenworthy 2101 0 - 1
Timothy Lunn 2028 1 - 0
Dan Waller 2086 ½ - ½
Adrian G Elwin 1952 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2183 = (12299 + 400 * (3 - 1)) / 6)

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