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Kevin Costello III (2012COST01) has 44 nemeses in the world:

	WCA ID	Name
2009ZEMD01: Feliks Zemdegs View WCA profile Head to head with 2012COST01 See who I nemesize (264355)	2009ZEMD01	Feliks Zemdegs	View Feliks Zemdegs's WCA profile	Compare Feliks Zemdegs with Kevin Costello III
2011MAHT02: Natthaphat Mahtani (ณัฐภัทร จี มาทานี) View WCA profile Head to head with 2012COST01 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 Kevin Costello III
2012PATE01: Antonie Paterakis View WCA profile Head to head with 2012COST01 See who I nemesize (267695)	2012PATE01	Antonie Paterakis	View Antonie Paterakis's WCA profile	Compare Antonie Paterakis with Kevin Costello III
2013BURL01: Łukasz Burliga View WCA profile Head to head with 2012COST01 See who I nemesize (267776)	2013BURL01	Łukasz Burliga	View Łukasz Burliga's WCA profile	Compare Łukasz Burliga with Kevin Costello III
2013EGDA02: Martin Vædele Egdal View WCA profile Head to head with 2012COST01 See who I nemesize (272626)	2013EGDA02	Martin Vædele Egdal	View Martin Vædele Egdal's WCA profile	Compare Martin Vædele Egdal with Kevin Costello III
2014BAIR01: Ray Bai View WCA profile Head to head with 2012COST01 See who I nemesize (263655)	2014BAIR01	Ray Bai	View Ray Bai's WCA profile	Compare Ray Bai with Kevin Costello III
2014FRIT02: Oliver Fritz View WCA profile Head to head with 2012COST01 See who I nemesize (271188)	2014FRIT02	Oliver Fritz	View Oliver Fritz's WCA profile	Compare Oliver Fritz with Kevin Costello III
2015CECC01: Vicenzo Guerino Cecchini View WCA profile Head to head with 2012COST01 See who I nemesize (269058)	2015CECC01	Vicenzo Guerino Cecchini	View Vicenzo Guerino Cecchini's WCA profile	Compare Vicenzo Guerino Cecchini with Kevin Costello III
2015CHER07: Tommy Cherry View WCA profile Head to head with 2012COST01 See who I nemesize (272424)	2015CHER07	Tommy Cherry	View Tommy Cherry's WCA profile	Compare Tommy Cherry with Kevin Costello III
2015DEGL01: Lucas Déglise View WCA profile Head to head with 2012COST01 See my nemeses (3) See who I nemesize (267656)	2015DEGL01	Lucas Déglise	View Lucas Déglise's WCA profile	Compare Lucas Déglise with Kevin Costello III
2015FUSH01: Firstian Fushada (符逢城) View WCA profile Head to head with 2012COST01 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 Kevin Costello III
2015GROH02: Matěj Grohmann View WCA profile Head to head with 2012COST01 See my nemeses (3) See who I nemesize (262321)	2015GROH02	Matěj Grohmann	View Matěj Grohmann's WCA profile	Compare Matěj Grohmann with Kevin Costello III
2015LEON02: Ivan Li Ka Leong (李嘉亮) View WCA profile Head to head with 2012COST01 See who I nemesize (266824)	2015LEON02	Ivan Li Ka Leong (李嘉亮)	View Ivan Li Ka Leong (李嘉亮)'s WCA profile	Compare Ivan Li Ka Leong (李嘉亮) with Kevin Costello III
2015MACK06: Zeke Mackay View WCA profile Head to head with 2012COST01 See who I nemesize (271908)	2015MACK06	Zeke Mackay	View Zeke Mackay's WCA profile	Compare Zeke Mackay with Kevin Costello III
2015QUAN03: Ng Jia Quan (黄佳铨) View WCA profile Head to head with 2012COST01 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 Kevin Costello III
2015WANG09: Kai-Wen Wang (王楷文) View WCA profile Head to head with 2012COST01 See who I nemesize (266762)	2015WANG09	Kai-Wen Wang (王楷文)	View Kai-Wen Wang (王楷文)'s WCA profile	Compare Kai-Wen Wang (王楷文) with Kevin Costello III
2016BARO04: Ben Baron View WCA profile Head to head with 2012COST01 See who I nemesize (272275)	2016BARO04	Ben Baron	View Ben Baron's WCA profile	Compare Ben Baron with Kevin Costello III
2016CHAP04: Stanley Chapel View WCA profile Head to head with 2012COST01 See who I nemesize (272561)	2016CHAP04	Stanley Chapel	View Stanley Chapel's WCA profile	Compare Stanley Chapel with Kevin Costello III
2016CHEU04: Andy Mok Man Cheuk (莫文卓) View WCA profile Head to head with 2012COST01 See who I nemesize (269285)	2016CHEU04	Andy Mok Man Cheuk (莫文卓)	View Andy Mok Man Cheuk (莫文卓)'s WCA profile	Compare Andy Mok Man Cheuk (莫文卓) with Kevin Costello III
2016DEXT01: Riley Dexter View WCA profile Head to head with 2012COST01 See my nemeses (1) See who I nemesize (269804)	2016DEXT01	Riley Dexter	View Riley Dexter's WCA profile	Compare Riley Dexter with Kevin Costello III
2016HUNG08: Lim Hung (林弘) View WCA profile Head to head with 2012COST01 See who I nemesize (266863)	2016HUNG08	Lim Hung (林弘)	View Lim Hung (林弘)'s WCA profile	Compare Lim Hung (林弘) with Kevin Costello III
2016JENS09: William Jensen View WCA profile Head to head with 2012COST01 See who I nemesize (271277)	2016JENS09	William Jensen	View William Jensen's WCA profile	Compare William Jensen with Kevin Costello III
2016JONE04: Jode Brewster View WCA profile Head to head with 2012COST01 See who I nemesize (268965)	2016JONE04	Jode Brewster	View Jode Brewster's WCA profile	Compare Jode Brewster with Kevin Costello III
2016PFEI01: Jack Pfeifer View WCA profile Head to head with 2012COST01 See who I nemesize (270307)	2016PFEI01	Jack Pfeifer	View Jack Pfeifer's WCA profile	Compare Jack Pfeifer with Kevin Costello III
2016PILA03: Ryan Pilat View WCA profile Head to head with 2012COST01 See who I nemesize (272842)	2016PILA03	Ryan Pilat	View Ryan Pilat's WCA profile	Compare Ryan Pilat with Kevin Costello III
2016ROLZ01: Alwin Rölz View WCA profile Head to head with 2012COST01 See who I nemesize (270124)	2016ROLZ01	Alwin Rölz	View Alwin Rölz's WCA profile	Compare Alwin Rölz with Kevin Costello III
2017AGGA01: Sameer Aggarwal View WCA profile Head to head with 2012COST01 See who I nemesize (271046)	2017AGGA01	Sameer Aggarwal	View Sameer Aggarwal's WCA profile	Compare Sameer Aggarwal with Kevin Costello III
2017GARR05: Luke Garrett View WCA profile Head to head with 2012COST01 See who I nemesize (272959)	2017GARR05	Luke Garrett	View Luke Garrett's WCA profile	Compare Luke Garrett with Kevin Costello III
2017GOLU01: Theo Goluboff View WCA profile Head to head with 2012COST01 See who I nemesize (271520)	2017GOLU01	Theo Goluboff	View Theo Goluboff's WCA profile	Compare Theo Goluboff with Kevin Costello III
2017MAND13: Francisco Moraes Mandalozzo View WCA profile Head to head with 2012COST01 See who I nemesize (269817)	2017MAND13	Francisco Moraes Mandalozzo	View Francisco Moraes Mandalozzo's WCA profile	Compare Francisco Moraes Mandalozzo with Kevin Costello III
2017MAZH04: Zhiyuan Ma (马之元) View WCA profile Head to head with 2012COST01 See who I nemesize (269350)	2017MAZH04	Zhiyuan Ma (马之元)	View Zhiyuan Ma (马之元)'s WCA profile	Compare Zhiyuan Ma (马之元) with Kevin Costello III
2017PABI01: Magdalena Pabisz View WCA profile Head to head with 2012COST01 See who I nemesize (269471)	2017PABI01	Magdalena Pabisz	View Magdalena Pabisz's WCA profile	Compare Magdalena Pabisz with Kevin Costello III
2017PARK05: DongSoo Park (박동수) View WCA profile Head to head with 2012COST01 See who I nemesize (269383)	2017PARK05	DongSoo Park (박동수)	View DongSoo Park (박동수)'s WCA profile	Compare DongSoo Park (박동수) with Kevin Costello III
2017SIAU02: Max Siauw View WCA profile Head to head with 2012COST01 See who I nemesize (270692)	2017SIAU02	Max Siauw	View Max Siauw's WCA profile	Compare Max Siauw with Kevin Costello III
2017WURY01: Ryan Wu View WCA profile Head to head with 2012COST01 See my nemeses (4) See who I nemesize (268748)	2017WURY01	Ryan Wu	View Ryan Wu's WCA profile	Compare Ryan Wu with Kevin Costello III
2018SATO01: Sora Sato View WCA profile Head to head with 2012COST01 See my nemeses (1) See who I nemesize (266205)	2018SATO01	Sora Sato	View Sora Sato's WCA profile	Compare Sora Sato with Kevin Costello III
2018THOM29: Carter Thomas View WCA profile Head to head with 2012COST01 See who I nemesize (267244)	2018THOM29	Carter Thomas	View Carter Thomas's WCA profile	Compare Carter Thomas with Kevin Costello III
2019RAMO05: Dwyane Ramos View WCA profile Head to head with 2012COST01 See who I nemesize (269790)	2019RAMO05	Dwyane Ramos	View Dwyane Ramos's WCA profile	Compare Dwyane Ramos with Kevin Costello III
2020REJD01: Gabriel Rejdych View WCA profile Head to head with 2012COST01 See who I nemesize (264094)	2020REJD01	Gabriel Rejdych	View Gabriel Rejdych's WCA profile	Compare Gabriel Rejdych with Kevin Costello III
2020TAOR01: Richard Yiheng Tao View WCA profile Head to head with 2012COST01 See my nemeses (1) See who I nemesize (267360)	2020TAOR01	Richard Yiheng Tao	View Richard Yiheng Tao's WCA profile	Compare Richard Yiheng Tao with Kevin Costello III
2021DUNA01: Brendyn Dunagan View WCA profile Head to head with 2012COST01 See who I nemesize (269892)	2021DUNA01	Brendyn Dunagan	View Brendyn Dunagan's WCA profile	Compare Brendyn Dunagan with Kevin Costello III
2021PHIL05: Nathan Phillips View WCA profile Head to head with 2012COST01 See my nemeses (1) See who I nemesize (266920)	2021PHIL05	Nathan Phillips	View Nathan Phillips's WCA profile	Compare Nathan Phillips with Kevin Costello III
2021PIET01: Tomasz Pietruszka View WCA profile Head to head with 2012COST01 See who I nemesize (268971)	2021PIET01	Tomasz Pietruszka	View Tomasz Pietruszka's WCA profile	Compare Tomasz Pietruszka with Kevin Costello III
2022PART02: Daniel Partridge View WCA profile Head to head with 2012COST01 See who I nemesize (271204)	2022PART02	Daniel Partridge	View Daniel Partridge's WCA profile	Compare Daniel Partridge with Kevin Costello III

Based on data export from 2nd December 2025
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