Event: June Swiss

Opponent Rating Result
Stephen Livermore 1755 ½ - ½
Matthew J Morter 1599 0 - 1
Armando Galletti 1733 ½ - ½
Graham R Jones 1534 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1555 = (6621 + 400 * (0 - 1)) / 4)

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