Event: IM Brown Shield

Opponent Rating Result
Andrew Nettleship 1560 1 - 0
Ben Moran 1523 0 - 1
Peter Gregory 1587 1 - 0
Steve A Spencer 1730 ½ - ½
Chris R Tinker 1677 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1775 = (8077 + 400 * (3 - 1)) / 5)

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