Event: Division 4

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Opponent Rating Result
Martin Thompson 1465 1 - 0
Irina Briggs 1590 1 - 0
Mick J Renshaw 1476 1 - 0
Ethan Tatters 1570 1 - 0
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1925 = (6101 + 400 * (4 - 0)) / 4)

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