| Player data |
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 | SNo | 49 | FIDE | 2067 | Local | 2100 |
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| Name | Szewczyk, Mariusz | Fed | POL | Birthday | 1995-07-29 |
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| Club | MKS Polonia Warszawa | Title | I++ | Local ID | PL-24632 |
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| Code | 1147579 | Sex | M | State | MA |
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| Number of rated opponents: | 8 | Score vs. rated opponents: | 1.5 |
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| Average rating: | 2070 | Rating Change: | -2.48 |
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