Event: Division 1

Opponent Rating Result
Mark E Page 2163 ½ - ½
Jude Shearsby 1993 1 - 0
Philip Purcell 2116 1 - 0
Georgs Vikanis 2008 1 - 0
Donald J Mason 2167 ½ - ½
Donald J Mason 2137 ½ - ½
Gary C Jackson 1937 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2303 = (14521 + 400 * (4 - 0)) / 7)

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