Event: Division 2

Opponent Rating Result
Andrew E James 143 0 - 1
David Lacey 129 1 - 0
Steve J Dyer 137 ½ - ½
Tony C Norris 126 ½ - ½
Siddharth Venkatanarayanan 119 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

211 = (654 + 400 * (2 - 1)) / 5)

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