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Kazuya Ishii (石井一也) (2019ISHI07) has 58 nemeses in the world:

	WCA ID	Name
2010UTOM01: Vincent Hartanto Utomo View WCA profile Head to head with 2019ISHI07 See my nemeses (2) See who I nemesize (267360)	2010UTOM01	Vincent Hartanto Utomo	View Vincent Hartanto Utomo's WCA profile	Compare Vincent Hartanto Utomo with Kazuya Ishii (石井一也)
2011MAHT02: Natthaphat Mahtani (ณัฐภัทร จี มาทานี) View WCA profile Head to head with 2019ISHI07 See who I nemesize (269288)	2011MAHT02	Natthaphat Mahtani (ณัฐภัทร จี มาทานี)	View Natthaphat Mahtani (ณัฐภัทร จี มาทานี)'s WCA profile	Compare Natthaphat Mahtani (ณัฐภัทร จี มาทานี) with Kazuya Ishii (石井一也)
2011TRON02: Sebastiano Tronto View WCA profile Head to head with 2019ISHI07 See who I nemesize (246515)	2011TRON02	Sebastiano Tronto	View Sebastiano Tronto's WCA profile	Compare Sebastiano Tronto with Kazuya Ishii (石井一也)
2012MCNE01: Jayden McNeill View WCA profile Head to head with 2019ISHI07 See who I nemesize (268205)	2012MCNE01	Jayden McNeill	View Jayden McNeill's WCA profile	Compare Jayden McNeill with Kazuya Ishii (石井一也)
2013BROW04: Evan Brown View WCA profile Head to head with 2019ISHI07 See who I nemesize (265178)	2013BROW04	Evan Brown	View Evan Brown's WCA profile	Compare Evan Brown with Kazuya Ishii (石井一也)
2013EGDA01: Daniel Vædele Egdal View WCA profile Head to head with 2019ISHI07 See who I nemesize (269905)	2013EGDA01	Daniel Vædele Egdal	View Daniel Vædele Egdal's WCA profile	Compare Daniel Vædele Egdal with Kazuya Ishii (石井一也)
2013GERT01: Nicolas Gertner Kilian View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (265876)	2013GERT01	Nicolas Gertner Kilian	View Nicolas Gertner Kilian's WCA profile	Compare Nicolas Gertner Kilian with Kazuya Ishii (石井一也)
2013JOHN10: Brian Johnson View WCA profile Head to head with 2019ISHI07 See who I nemesize (267119)	2013JOHN10	Brian Johnson	View Brian Johnson's WCA profile	Compare Brian Johnson with Kazuya Ishii (石井一也)
2013SAVA01: Harry Savage View WCA profile Head to head with 2019ISHI07 See who I nemesize (269390)	2013SAVA01	Harry Savage	View Harry Savage's WCA profile	Compare Harry Savage with Kazuya Ishii (石井一也)
2014CHIC01: Christopher Chi View WCA profile Head to head with 2019ISHI07 See who I nemesize (269548)	2014CHIC01	Christopher Chi	View Christopher Chi's WCA profile	Compare Christopher Chi with Kazuya Ishii (石井一也)
2014KARN02: Daniel Karnaukh View WCA profile Head to head with 2019ISHI07 See who I nemesize (266675)	2014KARN02	Daniel Karnaukh	View Daniel Karnaukh's WCA profile	Compare Daniel Karnaukh with Kazuya Ishii (石井一也)
2014KIPR01: Tommy Kiprillis View WCA profile Head to head with 2019ISHI07 See who I nemesize (266333)	2014KIPR01	Tommy Kiprillis	View Tommy Kiprillis's WCA profile	Compare Tommy Kiprillis with Kazuya Ishii (石井一也)
2014LALI01: Ishaan Lal View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (262371)	2014LALI01	Ishaan Lal	View Ishaan Lal's WCA profile	Compare Ishaan Lal with Kazuya Ishii (石井一也)
2014MAUR06: Lorenzo Mauro View WCA profile Head to head with 2019ISHI07 See who I nemesize (268715)	2014MAUR06	Lorenzo Mauro	View Lorenzo Mauro's WCA profile	Compare Lorenzo Mauro with Kazuya Ishii (石井一也)
2014SCHW02: Fabio Schwandt View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (269546)	2014SCHW02	Fabio Schwandt	View Fabio Schwandt's WCA profile	Compare Fabio Schwandt with Kazuya Ishii (石井一也)
2014TAMI01: Roy Tamir View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (264455)	2014TAMI01	Roy Tamir	View Roy Tamir's WCA profile	Compare Roy Tamir with Kazuya Ishii (石井一也)
2014ZYCH01: Jan Zych View WCA profile Head to head with 2019ISHI07 See who I nemesize (258521)	2014ZYCH01	Jan Zych	View Jan Zych's WCA profile	Compare Jan Zych with Kazuya Ishii (石井一也)
2015FUSH01: Firstian Fushada (符逢城) View WCA profile Head to head with 2019ISHI07 See who I nemesize (272401)	2015FUSH01	Firstian Fushada (符逢城)	View Firstian Fushada (符逢城)'s WCA profile	Compare Firstian Fushada (符逢城) with Kazuya Ishii (石井一也)
2015KUCA01: Carter Kucala View WCA profile Head to head with 2019ISHI07 See who I nemesize (272254)	2015KUCA01	Carter Kucala	View Carter Kucala's WCA profile	Compare Carter Kucala with Kazuya Ishii (石井一也)
2015MACK06: Zeke Mackay View WCA profile Head to head with 2019ISHI07 See who I nemesize (271908)	2015MACK06	Zeke Mackay	View Zeke Mackay's WCA profile	Compare Zeke Mackay with Kazuya Ishii (石井一也)
2015ONOF01: Anuar Miguel Abib Onofre View WCA profile Head to head with 2019ISHI07 See who I nemesize (245516)	2015ONOF01	Anuar Miguel Abib Onofre	View Anuar Miguel Abib Onofre's WCA profile	Compare Anuar Miguel Abib Onofre with Kazuya Ishii (石井一也)
2015QUAN03: Ng Jia Quan (黄佳铨) View WCA profile Head to head with 2019ISHI07 See who I nemesize (272081)	2015QUAN03	Ng Jia Quan (黄佳铨)	View Ng Jia Quan (黄佳铨)'s WCA profile	Compare Ng Jia Quan (黄佳铨) with Kazuya Ishii (石井一也)
2015SHAH09: Krish Shah-Nathwani View WCA profile Head to head with 2019ISHI07 See who I nemesize (266058)	2015SHAH09	Krish Shah-Nathwani	View Krish Shah-Nathwani's WCA profile	Compare Krish Shah-Nathwani with Kazuya Ishii (石井一也)
2015SIAN01: Dylan Seah Tze Siang (谢智翔) View WCA profile Head to head with 2019ISHI07 See who I nemesize (264958)	2015SIAN01	Dylan Seah Tze Siang (谢智翔)	View Dylan Seah Tze Siang (谢智翔)'s WCA profile	Compare Dylan Seah Tze Siang (谢智翔) with Kazuya Ishii (石井一也)
2016BARO04: Ben Baron View WCA profile Head to head with 2019ISHI07 See who I nemesize (272275)	2016BARO04	Ben Baron	View Ben Baron's WCA profile	Compare Ben Baron with Kazuya Ishii (石井一也)
2016CHAP04: Stanley Chapel View WCA profile Head to head with 2019ISHI07 See who I nemesize (272561)	2016CHAP04	Stanley Chapel	View Stanley Chapel's WCA profile	Compare Stanley Chapel with Kazuya Ishii (石井一也)
2016EPST02: David Epstein View WCA profile Head to head with 2019ISHI07 See who I nemesize (265281)	2016EPST02	David Epstein	View David Epstein's WCA profile	Compare David Epstein with Kazuya Ishii (石井一也)
2016HOUN01: Joshua Hounslow View WCA profile Head to head with 2019ISHI07 See my nemeses (2) See who I nemesize (266495)	2016HOUN01	Joshua Hounslow	View Joshua Hounslow's WCA profile	Compare Joshua Hounslow with Kazuya Ishii (石井一也)
2016KAMA04: AJ Kamal View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (265272)	2016KAMA04	AJ Kamal	View AJ Kamal's WCA profile	Compare AJ Kamal with Kazuya Ishii (石井一也)
2016KELL10: Adam Marcellus Kelly View WCA profile Head to head with 2019ISHI07 See who I nemesize (268894)	2016KELL10	Adam Marcellus Kelly	View Adam Marcellus Kelly's WCA profile	Compare Adam Marcellus Kelly with Kazuya Ishii (石井一也)
2016KELL12: Simon Kellum View WCA profile Head to head with 2019ISHI07 See who I nemesize (269362)	2016KELL12	Simon Kellum	View Simon Kellum's WCA profile	Compare Simon Kellum with Kazuya Ishii (石井一也)
2016KRAF01: Noah Kraft View WCA profile Head to head with 2019ISHI07 See who I nemesize (266375)	2016KRAF01	Noah Kraft	View Noah Kraft's WCA profile	Compare Noah Kraft with Kazuya Ishii (石井一也)
2016LOPE44: Mauro Moisés Ortega López View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (261622)	2016LOPE44	Mauro Moisés Ortega López	View Mauro Moisés Ortega López's WCA profile	Compare Mauro Moisés Ortega López with Kazuya Ishii (石井一也)
2016OCHS01: Zachary Ochs View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (263963)	2016OCHS01	Zachary Ochs	View Zachary Ochs's WCA profile	Compare Zachary Ochs with Kazuya Ishii (石井一也)
2016PILA03: Ryan Pilat View WCA profile Head to head with 2019ISHI07 See who I nemesize (272842)	2016PILA03	Ryan Pilat	View Ryan Pilat's WCA profile	Compare Ryan Pilat with Kazuya Ishii (石井一也)
2016QUIN01: James Quinn View WCA profile Head to head with 2019ISHI07 See my nemeses (2) See who I nemesize (264365)	2016QUIN01	James Quinn	View James Quinn's WCA profile	Compare James Quinn with Kazuya Ishii (石井一也)
2016SINY01: Alexei Sinyavin View WCA profile Head to head with 2019ISHI07 See who I nemesize (260901)	2016SINY01	Alexei Sinyavin	View Alexei Sinyavin's WCA profile	Compare Alexei Sinyavin with Kazuya Ishii (石井一也)
2016SZAN01: Szabolcs Szántai View WCA profile Head to head with 2019ISHI07 See who I nemesize (268295)	2016SZAN01	Szabolcs Szántai	View Szabolcs Szántai's WCA profile	Compare Szabolcs Szántai with Kazuya Ishii (石井一也)
2016TARA04: Igor Tarasov View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (267264)	2016TARA04	Igor Tarasov	View Igor Tarasov's WCA profile	Compare Igor Tarasov with Kazuya Ishii (石井一也)
2016ZHEN09: Ang Chin Zhen (洪靖程) View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (264597)	2016ZHEN09	Ang Chin Zhen (洪靖程)	View Ang Chin Zhen (洪靖程)'s WCA profile	Compare Ang Chin Zhen (洪靖程) with Kazuya Ishii (石井一也)
2017BRYA06: Aedan Bryant View WCA profile Head to head with 2019ISHI07 See who I nemesize (267588)	2017BRYA06	Aedan Bryant	View Aedan Bryant's WCA profile	Compare Aedan Bryant with Kazuya Ishii (石井一也)
2017CHOI07: Kyeongmin Choi (최경민) View WCA profile Head to head with 2019ISHI07 See who I nemesize (269911)	2017CHOI07	Kyeongmin Choi (최경민)	View Kyeongmin Choi (최경민)'s WCA profile	Compare Kyeongmin Choi (최경민) with Kazuya Ishii (石井一也)
2017PARK05: DongSoo Park (박동수) View WCA profile Head to head with 2019ISHI07 See who I nemesize (269383)	2017PARK05	DongSoo Park (박동수)	View DongSoo Park (박동수)'s WCA profile	Compare DongSoo Park (박동수) with Kazuya Ishii (石井一也)
2017RIVA09: Quentin Rivault View WCA profile Head to head with 2019ISHI07 See who I nemesize (203609)	2017RIVA09	Quentin Rivault	View Quentin Rivault's WCA profile	Compare Quentin Rivault with Kazuya Ishii (石井一也)
2017SWOR01: Noah Swor View WCA profile Head to head with 2019ISHI07 See who I nemesize (271746)	2017SWOR01	Noah Swor	View Noah Swor's WCA profile	Compare Noah Swor with Kazuya Ishii (石井一也)
2017XUAN03: Shawn Lee Zhi Xuan (李致轩) View WCA profile Head to head with 2019ISHI07 See my nemeses (2) See who I nemesize (259665)	2017XUAN03	Shawn Lee Zhi Xuan (李致轩)	View Shawn Lee Zhi Xuan (李致轩)'s WCA profile	Compare Shawn Lee Zhi Xuan (李致轩) with Kazuya Ishii (石井一也)
2018CREE01: Kerry Creech View WCA profile Head to head with 2019ISHI07 See who I nemesize (269550)	2018CREE01	Kerry Creech	View Kerry Creech's WCA profile	Compare Kerry Creech with Kazuya Ishii (石井一也)
2018GIBS04: Levi Gibson View WCA profile Head to head with 2019ISHI07 See who I nemesize (262704)	2018GIBS04	Levi Gibson	View Levi Gibson's WCA profile	Compare Levi Gibson with Kazuya Ishii (石井一也)
2018MOSH01: Zecharya Moshavi View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (233519)	2018MOSH01	Zecharya Moshavi	View Zecharya Moshavi's WCA profile	Compare Zecharya Moshavi with Kazuya Ishii (石井一也)
2019KARP03: Bartosz Karpiński View WCA profile Head to head with 2019ISHI07 See who I nemesize (253138)	2019KARP03	Bartosz Karpiński	View Bartosz Karpiński's WCA profile	Compare Bartosz Karpiński with Kazuya Ishii (石井一也)
2019MERR02: Alexis Le Merrer View WCA profile Head to head with 2019ISHI07 See my nemeses (3) See who I nemesize (256092)	2019MERR02	Alexis Le Merrer	View Alexis Le Merrer's WCA profile	Compare Alexis Le Merrer with Kazuya Ishii (石井一也)
2019RATT02: Louis-Marie Ratto View WCA profile Head to head with 2019ISHI07 See who I nemesize (252678)	2019RATT02	Louis-Marie Ratto	View Louis-Marie Ratto's WCA profile	Compare Louis-Marie Ratto with Kazuya Ishii (石井一也)
2019SHEN10: Jeremy Sheng View WCA profile Head to head with 2019ISHI07 See my nemeses (1) See who I nemesize (265016)	2019SHEN10	Jeremy Sheng	View Jeremy Sheng's WCA profile	Compare Jeremy Sheng with Kazuya Ishii (石井一也)
2019YANG94: Cian-Jyun Yang (楊謙君) View WCA profile Head to head with 2019ISHI07 See who I nemesize (269127)	2019YANG94	Cian-Jyun Yang (楊謙君)	View Cian-Jyun Yang (楊謙君)'s WCA profile	Compare Cian-Jyun Yang (楊謙君) with Kazuya Ishii (石井一也)
2021ELIA01: Niklas Aasen Eliasson View WCA profile Head to head with 2019ISHI07 See who I nemesize (270759)	2021ELIA01	Niklas Aasen Eliasson	View Niklas Aasen Eliasson's WCA profile	Compare Niklas Aasen Eliasson with Kazuya Ishii (石井一也)
2021RAME01: Saisabari Ramesh View WCA profile Head to head with 2019ISHI07 See my nemeses (2) See who I nemesize (267705)	2021RAME01	Saisabari Ramesh	View Saisabari Ramesh's WCA profile	Compare Saisabari Ramesh with Kazuya Ishii (石井一也)
2022MIYA01: Hajime Miyazaki (宮崎朔) View WCA profile Head to head with 2019ISHI07 See who I nemesize (257669)	2022MIYA01	Hajime Miyazaki (宮崎朔)	View Hajime Miyazaki (宮崎朔)'s WCA profile	Compare Hajime Miyazaki (宮崎朔) with Kazuya Ishii (石井一也)
2022PORT01: Elijah La Porte View WCA profile Head to head with 2019ISHI07 See who I nemesize (262991)	2022PORT01	Elijah La Porte	View Elijah La Porte's WCA profile	Compare Elijah La Porte with Kazuya Ishii (石井一也)

Based on data export from 2nd December 2025
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