Event: Division 1

Opponent Rating Result
Gary Murphy 1867 1 - 0
Zheming Zhang 2137 0 - 1
Roger H Coathup 2152 ½ - ½
Kavin Velmurugan 1998 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1939 = (8154 + 400 * (1 - 2)) / 4)

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