Event: Division 1

Opponent Rating Result
D Ian Calvert 2021 ½ - ½
Marceli Ciesielski 1978 ½ - ½
Michael PL Inzani 1995 ½ - ½
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1998 = (5994 + 400 * (0 - 0)) / 3)

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