Who wins?

Interim title vs Chad Mendes (2015) vs Fighting Floyd Mayweather (2017)

Interim title vs Chad Mendes (2015) wins 76% to 24%. 24 more put them in the same row. From Conor McGregor's Greatest Moments Tier List. Pick a side.

liz.k3729 on Interim title vs Chad Mendes (2015): most electric card in UFC history

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

• Interim title vs Chad Mendes (2015) vs Snatching Aldo's belt in Dublin (2015)
• Interim title vs Chad Mendes (2015) vs Beating Nate Diaz in the rematch (2016)
• Interim title vs Chad Mendes (2015) vs 13-second KO of José Aldo (2015)
• Fighting Floyd Mayweather (2017) vs Beating Nate Diaz in the rematch (2016)
• Fighting Floyd Mayweather (2017) vs "Sixty G's baby" debut vs Marcus Brimage (2013)
• Fighting Floyd Mayweather (2017) vs Knocking out Dustin Poirier at featherweight (2014)