Event: League Division 2

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Opponent Rating Result
Jonathon Day 1681 1 - 0
Neil Calderbank 0 1 - 0
Pete Brennan 1493 1 - 0
Angelica Rowe 1596 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1593 = (4770 + 400 * (4 - 0)) / 4)

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