Event: Croydon Shield

Opponent Rating Result
Paul J O'Donovan 0 0 - 1
Adam Fysh-Foskett 2333 0 - 1
Ian L Snape 2161 ½ - ½
Graham DJ Keane 2179 ½ - ½
Evaldas Baltrunas 2220 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1699 = (8893 + 400 * (1 - 2)) / 5)

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