Event: SCCA Division 1 19/20

Opponent Rating Result
Stephen J Gregory 193 ½ - ½
Phil Hopkins 178 1 - 0
Chris J Dorrington 220 ½ - ½
Alex Sheerin 177 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

392 = (768 + 400 * (2 - 0)) / 4)

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