Event: Division 1

Opponent Rating Result
Thomas McLaren 158 0 - 1
Andrew E James 137 0 - 1
Patrick Baker 129 ½ - ½
Graham K Brown 148 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

43 = (572 + 400 * (1 - 2)) / 4)

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