Who wins?

Beating Nate Diaz in the rematch (2016) vs Fighting Floyd Mayweather (2017)

Beating Nate Diaz in the rematch (2016) wins 72% to 28%. 18 more put them in the same row. From Conor McGregor's Greatest Moments Tier List. Pick a side.

SilentGecko7689 on Beating Nate Diaz in the rematch (2016): greatest UFC fight ever, hype plus the fight itself

dark_possum_3452 on Fighting Floyd Mayweather (2017): An MMA guy took Floyd to round ten and made a fortune. Wild that it even happened.

Conor McGregor's Greatest Moments Tier List: the full ranking

More matchups

• Beating Nate Diaz in the rematch (2016) vs Interim title vs Chad Mendes (2015)
• Beating Nate Diaz in the rematch (2016) vs Snatching Aldo's belt in Dublin (2015)
• Beating Nate Diaz in the rematch (2016) vs "Sixty G's baby" debut vs Marcus Brimage (2013)
• Fighting Floyd Mayweather (2017) vs "Sixty G's baby" debut vs Marcus Brimage (2013)
• Fighting Floyd Mayweather (2017) vs Interim title vs Chad Mendes (2015)
• Fighting Floyd Mayweather (2017) vs Knocking out Dustin Poirier at featherweight (2014)