Undefeated Russian MMA fighter Ivan Shtyrkov signs with the UFC
Khabib Nurmagomedov plans to retire from UFC in two or three years because staying undefeated is 'impossible' - MMAmania.com
Undefeated UFC Fighters And Champions Of All Time - The SportsGrail
A Complete List of 17 Undefeated UFC Fighters // ONE37pm
Ranking the 15 best undefeated MMA fighters of all time ▷ SportsBrief.com
Ranking the 15 best undefeated MMA fighters of all time ▷ SportsBrief.com
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The 10 Greatest Undefeated MMA Fighters | Men's Journal
Barstool Sports on Twitter: "Connor Matthews is an Undefeated MMA Fighter & Former USAF Combat Controller Determined to be UFC Champion... (Video Interview with @Vindog56) https://t.co/cqZVMSYiPO https://t.co/FvWchD6gMA" / Twitter
10 UNDEFEATED Fighters Who Suffered Their First Loss to the Champion (UFC) - YouTube