[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-detail-86491-en":3,"doc-seo-86491-105":29,"detail-sidebar-cat-0-en-105":91},{"code":4,"msg":5,"data":6},0,"success",{"doc_id":7,"user_id":8,"nickname":9,"user_avatar":10,"doc_module":4,"category_id":11,"category_name":12,"doc_title":13,"doc_description":14,"doc_content":15,"file_id":16,"file_url":17,"file_type":18,"file_size":19,"view_count":20,"is_deleted":4,"is_public":20,"is_downloadable":20,"audit_status":20,"page_count":21,"language":22,"language_code":23,"site_id":24,"html_lang":23,"table_of_contents":25,"faqs":26,"seo_title":13,"seo_description":14,"update_tm":27,"read_time":28},86491,7971461740909,"Levi","https://ap-avatar.wpscdn.com/davatar_155a257f0dc6eb9ab79c44ca47cae57d",8,"Research & Report","Double Elimination formats for a 64-team FIFA World Cup","The recent expansion of the FIFA World Cup to 48 teams has sparked debate over moving to a 64-team format. Scaling the traditional structure of group stage followed by knockout increases structural flaws: more matches lose competitive relevance and the likelihood of games between top contenders declines. The paper analyzes alternative tournament designs using double-elimination structures for a 64-team mega-event, assessing competitive fairness, match quality, and scheduling feasibility. Results show fewer mathematically irrelevant matches and more high-profile games, but require greater operational complexity and team-match asymmetry.","arXiv :2607 . 10422v 1 [ cs .GT] 11 Jul 2026  \nDouble elimination formats for a 64-team FIFA World  \nCup™  \nCésar Rennó-Costa  \nInstituto Metrópole Digital (IMD), Universidade Federal do Rio Grande do Norte  \n(UFRN), Natal, RN, Brazil  \nAbstract  \nThe recent expansion of the FIFA World Cup™ to 48 teams has prompted discussions regarding a potential further increase to a 64-team format. Scaling the traditional tournament architecture (a round-robin group stage followed by a knockout phase) to 64 teams exacerbates existing structural flaws, notably increasing the frequency of matches lacking competitive relevance and reducing the probability of fixtures between top-ranked contenders. This paper investigates alternative tournament designs by analyzing doubleelimination structures for a 64-team mega-event. We evaluate the proposed formats based on competitive fairness, match quality, and scheduling feasibility. Our analysis demonstrates that a double-elimination format eliminates mathematically irrelevant matches and significantly increases the frequency of high-profile games. However, these benefits introduce complex operational constraints, including heightened scheduling complexity and an asymmetric distribution of matches per team, which require specific logistical adjustments. Ultimately, our findings suggest that the continuous scaling of mega-sporting events necessitates a paradigm shift toward non-traditional tournament designs to preserve competitive integrity.  \n1. Introduction  \nThe recent expansion of the FIFA World Cup™ to 48 teams has prompted ongoing discussions about potentially scaling the event further to a 64-team format (Rennó-Costa, 2023) . However, applying the traditional tournament  \nEmail address: [cesar@imd.ufrn.br](cesar@imd.ufrn.br) (César Rennó-Costa)  \narchitecture (a round-robin group stage followed by a knockout phase) to 64 teams exacerbates existing structural flaws. Specifically, this traditional scaling increases the frequency of matches lacking competitive relevance, generating games where teams might already be mathematically qualified or eliminated prior to kickoff. These \"dead rubbers\" severely impact the competition’s integrity, as qualified teams often lack the incentive to compete with maximum effort or may field alternative players, which can unfairly lead to the elimination of other contenders (Csató and Gyimesi, 2026) . As comprehensively documented by Kendall and Lenten (2017), the implementation of suboptimal sports rules can systematically induce perverse incentives that go awry, encouraging teams to behave strategically rather than competitively. These concerns reflect the debates that arose during the 48-team transition, notably when the initial proposal of 16 groups of three teams faced severe criticism due to its intrinsic vulnerability to collusion (Guyon, 2020; Csató, 2025) . In that configuration, one team is obligatorily idle during the final matchday, leaving them entirely at the mercy of the combined result of their two opponents (Guyon, 2020; Rennó-Costa, 2023) . Furthermore, the traditional format naturally reduces the probability of high-stakes fixtures between top-ranked contenders, eliminating strong teams rapidly through high-variance single-elimination matches (Devriesere et al., 2025a) .  \nTo address these challenges, the double-elimination format emerges as a disruptive alternative (Rennó-Costa, 2023) . By completely abolishing the group stage in favor of a purely knockout format with a repechage bracket, this design ensures that every match maintains a decisive character. In this structure, a team is only eliminated from the tournament after suffering two losses, guaranteeing that no team is eliminated after a victory and ensuring that every single game is competitively relevant. Consequently, this structural shift effectively removes the incentives for bilateral collusion that plague traditional round-robin stages. Furthermore, it mitigates unilateral manipulati","cbCaieRLcR9OzDjz","https://ap.wps.com/l/cbCaieRLcR9OzDjz","pdf",1870322,1,21,"English","en",105,"# Abstract\n# Introduction\n## Motivation from the 48-team expansion\n## Limits of traditional group-plus-knockout scaling\n## Double-elimination as an alternative\n## Related work on tournament manipulation and incentives\n# Proposed study: evaluating double-elimination for 64 teams","[{\"question\":\"Why does scaling the traditional World Cup format to 64 teams create problems?\",\"answer\":\"It increases “dead rubbers” where teams are already qualified or eliminated before kickoff, which reduces competitive integrity and may allow strategic lineup choices. It also lowers the chance of high-stakes matches between top-ranked contenders because of the high-variance nature of single-elimination knockouts.\"},{\"question\":\"How does a double-elimination structure address match irrelevance?\",\"answer\":\"In the proposed approach, teams are eliminated only after suffering two losses, so every match has decisive competitive character. This removes scenarios where teams could be eliminated after only a win and ensures that games remain relevant for tournament progression.\"},{\"question\":\"What trade-offs does the paper find when adopting double elimination for a 64-team event?\",\"answer\":\"The benefits include eliminating mathematically irrelevant matches and increasing high-profile games. The trade-offs are higher scheduling complexity and an asymmetric distribution of matches across teams, which demands specific logistical adjustments.\"}]",1784212129,53,{"code":4,"msg":30,"data":31},"ok",{"site_id":24,"language":23,"slug":32,"title":13,"keywords":33,"description":14,"schema_data":34,"social_meta":86,"head_meta":88,"extra_data":90,"updated_unix":27},"double-elimination-formats-for-a-64-team-fifa-world-cup","",{"@graph":35,"@context":85},[36,53,68],{"@type":37,"itemListElement":38},"BreadcrumbList",[39,43,47,50],{"item":40,"name":41,"@type":42,"position":20},"https://docshare.wps.com","Home","ListItem",{"item":44,"name":45,"@type":42,"position":46},"https://docshare.wps.com/document/","Document",2,{"item":48,"name":12,"@type":42,"position":49},"https://docshare.wps.com/document/research-report/",3,{"item":51,"name":13,"@type":42,"position":52},"https://docshare.wps.com/document/double-elimination-formats-for-a-64-team-fifa-world-cup/86491/",4,{"url":51,"name":13,"@type":54,"author":55,"headline":13,"publisher":57,"fileFormat":60,"inLanguage":23,"description":14,"dateModified":61,"datePublished":62,"encodingFormat":60,"isAccessibleForFree":63,"interactionStatistic":64},"DigitalDocument",{"name":9,"@type":56},"Person",{"url":40,"name":58,"@type":59},"DocShare","Organization","application/pdf","2026-07-27","2026-07-16",true,{"@type":65,"interactionType":66,"userInteractionCount":20},"InteractionCounter",{"@type":67},"ViewAction",{"@type":69,"mainEntity":70},"FAQPage",[71,77,81],{"name":72,"@type":73,"acceptedAnswer":74},"Why does scaling the traditional World Cup format to 64 teams create problems?","Question",{"text":75,"@type":76},"It increases “dead rubbers” where teams are already qualified or eliminated before kickoff, which reduces competitive integrity and may allow strategic lineup choices. It also lowers the chance of high-stakes matches between top-ranked contenders because of the high-variance nature of single-elimination knockouts.","Answer",{"name":78,"@type":73,"acceptedAnswer":79},"How does a double-elimination structure address match irrelevance?",{"text":80,"@type":76},"In the proposed approach, teams are eliminated only after suffering two losses, so every match has decisive competitive character. This removes scenarios where teams could be eliminated after only a win and ensures that games remain relevant for tournament progression.",{"name":82,"@type":73,"acceptedAnswer":83},"What trade-offs does the paper find when adopting double elimination for a 64-team event?",{"text":84,"@type":76},"The benefits include eliminating mathematically irrelevant matches and increasing high-profile games. The trade-offs are higher scheduling complexity and an asymmetric distribution of matches across teams, which demands specific logistical adjustments.","https://schema.org",{"og:url":51,"og:type":87,"og:title":13,"og:site_name":58,"og:description":14},"article",{"robots":89,"canonical":51},"index,follow",{"doc_id":7,"site_id":24},{"code":4,"msg":5,"data":92},[93,97,101,105,110,115,120,123,128,131,135],{"id":20,"doc_module":4,"doc_module_name":45,"category_name":94,"show_sort_weight":95,"slug":96},"Story & Novel",90,"story-novel",{"id":46,"doc_module":4,"doc_module_name":45,"category_name":98,"show_sort_weight":99,"slug":100},"Literature",80,"literature",{"id":52,"doc_module":4,"doc_module_name":45,"category_name":102,"show_sort_weight":103,"slug":104},"Exam",70,"exam",{"id":106,"doc_module":4,"doc_module_name":45,"category_name":107,"show_sort_weight":108,"slug":109},5,"Comic",60,"comic",{"id":111,"doc_module":4,"doc_module_name":45,"category_name":112,"show_sort_weight":113,"slug":114},6,"Technology",50,"technology",{"id":116,"doc_module":4,"doc_module_name":45,"category_name":117,"show_sort_weight":118,"slug":119},7,"Healthcare",40,"healthcare",{"id":11,"doc_module":4,"doc_module_name":45,"category_name":12,"show_sort_weight":121,"slug":122},30,"research-report",{"id":124,"doc_module":4,"doc_module_name":45,"category_name":125,"show_sort_weight":126,"slug":127},9,"Religion & Spirituality",20,"religion-spirituality",{"id":126,"doc_module":4,"doc_module_name":45,"category_name":129,"show_sort_weight":126,"slug":130},"World Cup","world-cup",{"id":132,"doc_module":4,"doc_module_name":45,"category_name":133,"show_sort_weight":132,"slug":134},10,"Lifestyle","lifestyle",{"id":136,"doc_module":4,"doc_module_name":45,"category_name":137,"show_sort_weight":106,"slug":138},19,"General","general"]