Mayweather-McGregor: Endurance a key factor in fightBoxing broadcaster Brian Kenny looks at whether Conor McGregor has the endurance to match Floyd Mayweather in a 12-round fight.SI Staff|Share on FacebookShare on XAdd us as a preferred sourceBoxing broadcaster Brian Kenny looks at whether Conor McGregor has the endurance to match Floyd Mayweather in a 12-round fight.Add us as a preferred source on GoogleFollowLoading recommendations... Please wait while we load personalized content recommendationsPublished Aug 23, 2017 | Modified Aug 23, 2017SI STAFFShare on FacebookShare on XHome/Boxing
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