Event: IM Brown

Opponent Rating Result
Alec Ward 1706 0 - 1
Angelica Rowe 1565 ½ - ½
Geoff Frost 1823 ½ - ½
Jonathon Day 1636 1 - 0
Peter Gregory 1573 0 - 1
William J Egan 1617 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1587 = (9920 + 400 * (1 - 2)) / 6)

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