{"id":151827,"date":"2026-01-01T20:54:38","date_gmt":"2026-01-02T01:54:38","guid":{"rendered":"https:\/\/sports.betmgm.com\/en\/blog\/?post_type=article-new&p=151827"},"modified":"2026-01-01T20:59:12","modified_gmt":"2026-01-02T01:59:12","slug":"top-5-undefeated-boxers-of-all-time-bm05","status":"publish","type":"article-new","link":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/","title":{"rendered":"Top 5 Undefeated Boxers of All Time"},"content":{"rendered":"

Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here’s a list of the top five.<\/p>\n","protected":false},"author":52,"featured_media":151828,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_acf_changed":false,"cybocfi_hide_featured_image":"","footnotes":""},"categories":[236],"previews-insights":[],"state":[],"team":[],"league":[],"level":[],"sport":[238],"gender":[],"bettingpreview":[],"event":[],"class_list":["post-151827","article-new","type-article-new","status-publish","has-post-thumbnail","hentry","category-sports","sport-pro-boxing"],"acf":[],"yoast_head":"\nTop 5 Undefeated Boxers of All Time | BetMGM<\/title>\n<meta name=\"description\" content=\"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Top 5 Undefeated Boxers of All Time\" \/>\n<meta property=\"og:description\" content=\"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/\" \/>\n<meta property=\"og:site_name\" content=\"BetMGM\" \/>\n<meta property=\"article:modified_time\" content=\"2026-01-02T01:59:12+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/sports.betmgm.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"1080\" \/>\n\t<meta property=\"og:image:height\" content=\"610\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data1\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"NewsArticle\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/\"},\"author\":{\"name\":\"Anatoly Pimentel\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#\\\/schema\\\/person\\\/5bec5ce20ace9352f5916fdd1dcc1e9d\"},\"headline\":\"Top 5 Undefeated Boxers of All Time\",\"datePublished\":\"2026-01-02T01:54:38+00:00\",\"dateModified\":\"2026-01-02T01:59:12+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/\"},\"wordCount\":32,\"publisher\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all\",\"articleSection\":[\"Sports\"],\"inLanguage\":\"en-US\",\"copyrightYear\":\"2026\",\"copyrightHolder\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#organization\"}},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/\",\"url\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/\",\"name\":\"Top 5 Undefeated Boxers of All Time | BetMGM\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all\",\"datePublished\":\"2026-01-02T01:54:38+00:00\",\"dateModified\":\"2026-01-02T01:59:12+00:00\",\"description\":\"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#primaryimage\",\"url\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all\",\"contentUrl\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2022\\\/09\\\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all\",\"width\":1080,\"height\":610,\"caption\":\"(AP Photo)\"},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/top-5-undefeated-boxers-of-all-time-bm05\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Top 5 Undefeated Boxers of All Time\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#website\",\"url\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/\",\"name\":\"BetMGM\",\"description\":\"Sports blog\",\"publisher\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#organization\",\"name\":\"BETMGM\",\"url\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/06\\\/author-image.jpg?strip=all\",\"contentUrl\":\"https:\\\/\\\/ekcfbmsotzc.exactdn.com\\\/en\\\/blog\\\/wp-content\\\/uploads\\\/2021\\\/06\\\/author-image.jpg?strip=all\",\"width\":297,\"height\":297,\"caption\":\"BETMGM\"},\"image\":{\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/#\\\/schema\\\/person\\\/5bec5ce20ace9352f5916fdd1dcc1e9d\",\"name\":\"Anatoly Pimentel\",\"description\":\"Anatoly Pimentel is an NBA and MMA writer previously featured in ASEAN Sports, Asian Persuasion MMA, and Overtime Heroics MMA. He graduated from Adamson University with a B.A in Communication and is a Web Content Writer for BetMGM.\",\"sameAs\":[\"https:\\\/\\\/x.com\\\/AnatolyPimentel\"],\"url\":\"https:\\\/\\\/sports.betmgm.com\\\/en\\\/blog\\\/author\\\/anatoly-pimentel\\\/\"}]}<\/script>\n<!-- \/ Yoast SEO Premium plugin. -->","yoast_head_json":{"title":"Top 5 Undefeated Boxers of All Time | BetMGM","description":"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/","og_locale":"en_US","og_type":"article","og_title":"Top 5 Undefeated Boxers of All Time","og_description":"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.","og_url":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/","og_site_name":"BetMGM","article_modified_time":"2026-01-02T01:59:12+00:00","og_image":[{"width":1080,"height":610,"url":"https:\/\/sports.betmgm.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","twitter_misc":{"Est. reading time":"1 minute"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"NewsArticle","@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#article","isPartOf":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/"},"author":{"name":"Anatoly Pimentel","@id":"https:\/\/sports.betmgm.com\/en\/blog\/#\/schema\/person\/5bec5ce20ace9352f5916fdd1dcc1e9d"},"headline":"Top 5 Undefeated Boxers of All Time","datePublished":"2026-01-02T01:54:38+00:00","dateModified":"2026-01-02T01:59:12+00:00","mainEntityOfPage":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/"},"wordCount":32,"publisher":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/#organization"},"image":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#primaryimage"},"thumbnailUrl":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all","articleSection":["Sports"],"inLanguage":"en-US","copyrightYear":"2026","copyrightHolder":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/#organization"}},{"@type":"WebPage","@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/","url":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/","name":"Top 5 Undefeated Boxers of All Time | BetMGM","isPartOf":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/#website"},"primaryImageOfPage":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#primaryimage"},"image":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#primaryimage"},"thumbnailUrl":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all","datePublished":"2026-01-02T01:54:38+00:00","dateModified":"2026-01-02T01:59:12+00:00","description":"Being an undefeated athlete is a tough feat, especially in boxing, due to a high level of competition. Here's a list of the top five.","breadcrumb":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#primaryimage","url":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all","contentUrl":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2022\/09\/top-5-undefeated-boxers-of-all-time-rocky-marciano-boxing-betmgm.jpg?strip=all","width":1080,"height":610,"caption":"(AP Photo)"},{"@type":"BreadcrumbList","@id":"https:\/\/sports.betmgm.com\/en\/blog\/top-5-undefeated-boxers-of-all-time-bm05\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Home","item":"https:\/\/sports.betmgm.com\/en\/blog\/"},{"@type":"ListItem","position":2,"name":"Top 5 Undefeated Boxers of All Time"}]},{"@type":"WebSite","@id":"https:\/\/sports.betmgm.com\/en\/blog\/#website","url":"https:\/\/sports.betmgm.com\/en\/blog\/","name":"BetMGM","description":"Sports blog","publisher":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/sports.betmgm.com\/en\/blog\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/sports.betmgm.com\/en\/blog\/#organization","name":"BETMGM","url":"https:\/\/sports.betmgm.com\/en\/blog\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/sports.betmgm.com\/en\/blog\/#\/schema\/logo\/image\/","url":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2021\/06\/author-image.jpg?strip=all","contentUrl":"https:\/\/ekcfbmsotzc.exactdn.com\/en\/blog\/wp-content\/uploads\/2021\/06\/author-image.jpg?strip=all","width":297,"height":297,"caption":"BETMGM"},"image":{"@id":"https:\/\/sports.betmgm.com\/en\/blog\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/sports.betmgm.com\/en\/blog\/#\/schema\/person\/5bec5ce20ace9352f5916fdd1dcc1e9d","name":"Anatoly Pimentel","description":"Anatoly Pimentel is an NBA and MMA writer previously featured in ASEAN Sports, Asian Persuasion MMA, and Overtime Heroics MMA. He graduated from Adamson University with a B.A in Communication and is a Web Content Writer for BetMGM.","sameAs":["https:\/\/x.com\/AnatolyPimentel"],"url":"https:\/\/sports.betmgm.com\/en\/blog\/author\/anatoly-pimentel\/"}]}},"permalink_manager":null,"_links":{"self":[{"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/article-new\/151827","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/article-new"}],"about":[{"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/types\/article-new"}],"author":[{"embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/users\/52"}],"replies":[{"embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/comments?post=151827"}],"version-history":[{"count":0,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/article-new\/151827\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/media\/151828"}],"wp:attachment":[{"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/media?parent=151827"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/categories?post=151827"},{"taxonomy":"previews-insights","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/previews-insights?post=151827"},{"taxonomy":"state","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/state?post=151827"},{"taxonomy":"team","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/team?post=151827"},{"taxonomy":"league","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/league?post=151827"},{"taxonomy":"level","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/level?post=151827"},{"taxonomy":"sport","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/sport?post=151827"},{"taxonomy":"gender","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/gender?post=151827"},{"taxonomy":"bettingpreview","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/bettingpreview?post=151827"},{"taxonomy":"event","embeddable":true,"href":"https:\/\/sports.betmgm.com\/en\/blog\/wp-json\/wp\/v2\/event?post=151827"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}