Event: Open 4-Board

Opponent Rating Result
Maria-Alexandra Ciocan 2068 1 - 0
Maria-Alexandra Ciocan 2098 0 - 1
Andrew Hayler 1961 1 - 0
James AB Stevenson 2106 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

2058 = (8233 + 400 * (2 - 2)) / 4)

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