Event: 2021 Summer Rapid Play

Opponent Rating Result
Andrew Du Boulay 1780 0 - 1
Steve Zsibrita 1495 0 - 1
Theo Berkhout 1067 1 - 0
James Hurley 1402 1 - 0
Barry A Cheal 2197 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1508 = (7941 + 400 * (2 - 3)) / 5)

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