Event: Blitz Battles

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Opponent Rating Result
William Walshe 1509 0 - 1
William Walshe 1509 0 - 1
William Walshe 1509 0 - 1
William Walshe 1509 0 - 1
William Walshe 1509 0 - 1
William Walshe 1509 0 - 1
Aram Swiatkowski 1819 0 - 1
Aram Swiatkowski 1819 0 - 1
Aram Swiatkowski 1819 0 - 1
Aram Swiatkowski 1819 1 - 0
Aram Swiatkowski 1819 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1395 = (18149 + 400 * (2 - 9)) / 11)

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