Event: IM Brown

Opponent Rating Result
Simon Bartle 1190 1 - 0
Elliott Barnett 1628 ½ - ½
Jeff Dutton 1544 ½ - ½
Richard O Callis 1670 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1608 = (6032 + 400 * (1 - 0)) / 4)

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