Event: Doncaster Bell Trophy

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Opponent Rating Result
A David Smart 122 1 - 0
Zak Tomlinson 124 0 - 1
A David Smart 122 ½ - ½
Zak Tomlinson 124 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

223 = (492 + 400 * (2 - 1)) / 4)

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