Event: IM Brown Shield

Opponent Rating Result
Phill J Beckett 1723 ½ - ½
Vivien Webster 1663 1 - 0
Bien Cuaresma 1717 ½ - ½
John Tate 1430 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1833 = (6533 + 400 * (2 - 0)) / 4)

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