Wins
35
Indexed tournament wins
Player record
Kowalczyk, Marzena
Losses
119
Indexed tournament losses
Matches
154
Decisive results
Win rate
22.7%
Across indexed matches
Peak rating
683
Highest rating in the available history.
Biggest upset
Beck, Johnnie
2015 South Shore Butterfly Open · Oct 25, 2015 · +543 rating
Open →Biggest loss
Polecki, Adam
Fall Open · Nov 14, 2015 · -301 rating
Open →Most frequent opponent
Brian Ngeunjuntr
4 matches
Open →Rating trajectory
Published rating movement across recorded events.
Tournament history
27 tournament appearances · synced Aug 8, 2026, 2:23 AM
| Date | Tournament | Rating in | Rating after | Points changed | Record |
|---|---|---|---|---|---|
| May 27, 2017 | America's Team ChampionshipTournament · View matches | 683 | 683 | 0+0 / 0 | 0W / 9L |
| Oct 29, 2016 | 2016 Edgeball Chicago International Table Tennis OpenTournament · View matches | 683 | 683 | 0+0 / 0 | 0W / 2L |
| Jun 25, 2016 | Illinois State ChampionshipsTournament · View matches | 640 | 683 | +43+50 / -7 | 1W / 4L |
| May 28, 2016 | America's Team ChampionshipTournament · View matches | 640 | 640 | 0+0 / 0 | 0W / 2L |
| May 7, 2016 | Windy City OpenTournament · View matches | 594 | 640 | +46+55 / -9 | 5W / 3L |
| Apr 2, 2016 | Spring OpenTournament · View matches | 608 | 594 | -14+18 / -32 | 3W / 4L |
| Mar 4, 2016 | Arnold Table Tennis ChallengeTournament · View matches | 608 | 608 | 0+0 / 0 | 0W / 3L |
| Jan 15, 2016 | 2016 Aurora CupTournament · View matches | 583 | 608 | +25+25 / 0 | 1W / 7L |
| Nov 14, 2015 | Fall OpenTournament · View matches | 606 | 583 | -23+3 / -26 | 1W / 2L |
| Oct 25, 2015 | 2015 South Shore Butterfly OpenTournament · View matches · USATT readjusted 506 → 556 | 506 | 606 | +50+50 / 0 | 1W / 4L |
| Sep 20, 2015 | 2015 Butterfly Badger OpenTournament · View matches | 493 | 506 | +13+18 / -5 | 2W / 6L |
| Sep 12, 2015 | September OpenTournament · View matches · USATT readjusted 471 → 475 | 471 | 493 | +18+44 / -26 | 4W / 4L |
| Aug 9, 2015 | 2015 Hyson Chicago International Table Tennis OpenTournament · View matches | 476 | 471 | -5+0 / -5 | 0W / 6L |
| May 9, 2015 | Schaumburg May OpenTournament · View matches · USATT readjusted 507 → 505 | 507 | 476 | -29+7 / -36 | 1W / 4L |
| Apr 19, 2015 | Lindenwood Fall OpenTournament · View matches | 502 | 502 | 0 | 2W / 7L |
| Feb 7, 2015 | Chinese New Year OpenTournament · View matches | 487 | 502 | +15 | 2W / 5L |
| Jan 18, 2015 | 2015 Butterfly Aurora CupTournament · View matches | 507 | 487 | -20 | 0W / 9L |
| Sep 27, 2014 | End of Summer OpenTournament · View matches · USATT readjusted 504 → 501 | 504 | 507 | +6+8 / -2 | 1W / 2L |
| Jul 26, 2014 | Summer OpenTournament · View matches · USATT readjusted 505 → 510 | 505 | 504 | -6+14 / -20 | 3W / 4L |
| Jun 28, 2014 | Wheeling Summer Open 1 StarTournament · View matches | 517 | 505 | -12 | 4W / 3L |
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