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Mark Ostrom (2017OSTR01) has 69 nemeses in the world:



WCA ID Name
  • 2011CAOS01: Sheng Cao (曹晟)
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 2011CAOS01 Sheng Cao (曹晟)
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  • 2011MAHT02: Natthaphat Mahtani (ณัฐภัทร จี มาทานี)
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 2011MAHT02 Natthaphat Mahtani (ณัฐภัทร จี มาทานี)
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  • 2012CHON03: Chao-Che Chung (鍾肇哲)
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 2012CHON03 Chao-Che Chung (鍾肇哲)
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  • 2012MAHV01: Paul Mahvi
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 2012MAHV01 Paul Mahvi
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  • 2013BOTZ01: Alexander Botz
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 2013BOTZ01 Alexander Botz
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  • 2013EGDA02: Martin Vædele Egdal
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 2013EGDA02 Martin Vædele Egdal
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  • 2013KLEI03: Livia Kleiner
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 2013KLEI03 Livia Kleiner
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  • 2013KOBA01: Tomohiro Kobayashi (小林知広)
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 2013KOBA01 Tomohiro Kobayashi (小林知広)
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  • 2014GERB01: Henri Gerber
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 2014GERB01 Henri Gerber
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  • 2014MEND02: Alexis Rodrigo Cazu Mendoza
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 2014MEND02 Alexis Rodrigo Cazu Mendoza
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  • 2015CHER07: Tommy Cherry
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 2015CHER07 Tommy Cherry
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  • 2015DJAN01: Govend Avgerinos Djangoi
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 2015DJAN01 Govend Avgerinos Djangoi
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  • 2015FUSH01: Firstian Fushada (符逢城)
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 2015FUSH01 Firstian Fushada (符逢城)
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  • 2015LEON02: Ivan Li Ka Leong (李嘉亮)
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 2015LEON02 Ivan Li Ka Leong (李嘉亮)
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  • 2015XION03: Max Xiong (熊锐明)
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 2015XION03 Max Xiong (熊锐明)
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  • 2016BARO04: Ben Baron
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 2016BARO04 Ben Baron
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  • 2016CHAP04: Stanley Chapel
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 2016CHAP04 Stanley Chapel
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  • 2016CHEU04: Andy Mok Man Cheuk (莫文卓)
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 2016CHEU04 Andy Mok Man Cheuk (莫文卓)
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  • 2016EPST02: David Epstein
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 2016EPST02 David Epstein
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  • 2016HART02: Sean Hartman
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 2016HART02 Sean Hartman
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  • 2016HRYN02: Vladyslav Hryniuk (Владислав Гринюк)
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 2016HRYN02 Vladyslav Hryniuk (Владислав Гринюк)
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  • 2016HUNG08: Lim Hung (林弘)
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 2016HUNG08 Lim Hung (林弘)
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  • 2016JENS09: William Jensen
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 2016JENS09 William Jensen
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  • 2016LIJE01: Jeffrey Li
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 2016LIJE01 Jeffrey Li
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  • 2016NAGU02: Christian Naguio
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 2016NAGU02 Christian Naguio
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  • 2016PFEI01: Jack Pfeifer
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 2016PFEI01 Jack Pfeifer
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  • 2016PILA03: Ryan Pilat
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 2016PILA03 Ryan Pilat
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  • 2016ROLZ01: Alwin Rölz
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 2016ROLZ01 Alwin Rölz
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  • 2016YONG02: Tristan Chua Yong
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 2016YONG02 Tristan Chua Yong
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  • 2017BYRN01: Magnus Søndergaard Byrne
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 2017BYRN01 Magnus Søndergaard Byrne
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  • 2017CHAM09: Cham J. Chambers
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 2017CHAM09 Cham J. Chambers
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  • 2017GARR05: Luke Garrett
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 2017GARR05 Luke Garrett
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  • 2017GOLU01: Theo Goluboff
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 2017GOLU01 Theo Goluboff
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  • 2017KWAN05: Burno Li Chak Kwan (李澤堃)
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 2017KWAN05 Burno Li Chak Kwan (李澤堃)
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  • 2017MAND13: Francisco Moraes Mandalozzo
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 2017MAND13 Francisco Moraes Mandalozzo
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  • 2017NOKE01: Jacob Nokes
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 2017NOKE01 Jacob Nokes
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  • 2017PARK05: DongSoo Park (박동수)
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 2017PARK05 DongSoo Park (박동수)
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  • 2017SANK04: Vishwa Sankar
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 2017SANK04 Vishwa Sankar
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  • 2017SARE03: Arhaan Sareen
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 2017SARE03 Arhaan Sareen
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  • 2017SIAU02: Max Siauw
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 2017SIAU02 Max Siauw
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  • 2018ALAM08: Leon Marcell Alamanda
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 2018ALAM08 Leon Marcell Alamanda
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  • 2018CAST17: Isaac Vergara Castillo
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 2018CAST17 Isaac Vergara Castillo
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  • 2018CHOE02: Ethan Cho
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 2018CHOE02 Ethan Cho
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  • 2018GRAH05: Kate Grahame
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 2018GRAH05 Kate Grahame
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  • 2018LICH05: Henry Lichner
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 2018LICH05 Henry Lichner
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  • 2018RUSH01: Daniel Rush
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 2018RUSH01 Daniel Rush
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  • 2018SAMK01: Max Kwok U Sam (郭愉琛)
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 2018SAMK01 Max Kwok U Sam (郭愉琛)
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  • 2018THOM29: Carter Thomas
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 2018THOM29 Carter Thomas
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  • 2018WALA01: Max Walaszek
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 2018WALA01 Max Walaszek
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  • 2019MORG10: Danny Morgan
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 2019MORG10 Danny Morgan
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  • 2019RAMO05: Dwyane Ramos
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 2019RAMO05 Dwyane Ramos
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  • 2019SUNY09: Yuhang Sun (孙煜航)
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 2019SUNY09 Yuhang Sun (孙煜航)
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  • 2019TARA09: Timofei Tarasenko
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 2019TARA09 Timofei Tarasenko
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  • 2019YANG94: Cian-Jyun Yang (楊謙君)
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 2019YANG94 Cian-Jyun Yang (楊謙君)
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  • 2019ZENG10: Wei-Ming Zeng (曾唯銘)
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 2019ZENG10 Wei-Ming Zeng (曾唯銘)
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  • 2019ZHEN04: Deng Zhengping
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 2019ZHEN04 Deng Zhengping
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  • 2020REJD01: Gabriel Rejdych
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 2020REJD01 Gabriel Rejdych
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  • 2021BACK01: Jack Larsson Backsell
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 2021BACK01 Jack Larsson Backsell
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  • 2021DUNA01: Brendyn Dunagan
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 2021DUNA01 Brendyn Dunagan
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  • 2021EYLE01: Henry Eyles
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 2021EYLE01 Henry Eyles
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  • 2021MARI04: Paolo Marino
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 2021MARI04 Paolo Marino
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  • 2021PHIL05: Nathan Phillips
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 2021PHIL05 Nathan Phillips
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  • 2021PIET01: Tomasz Pietruszka
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 2021PIET01 Tomasz Pietruszka
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  • 2021SKOW01: Maciej Skowroński
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 2021SKOW01 Maciej Skowroński
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  • 2021VENZ01: Silvan Venzin
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 2021VENZ01 Silvan Venzin
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  • 2022AHLS01: Arvid Ahlstrand
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 2022AHLS01 Arvid Ahlstrand
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  • 2022MATY02: Konrad Matyszek
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 2022MATY02 Konrad Matyszek
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  • 2022PART02: Daniel Partridge
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 2022PART02 Daniel Partridge
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  • 2023ZAST01: Szymon Zastawny
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 2023ZAST01 Szymon Zastawny
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Based on data export from 2nd December 2025
Please report bugs or feature requests to bugs@nemesizer.com




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