UFC and MMA pros react to Floyd Mayweather's victory over Andre Berto last night in Las Vegas

Floyd Maywaether's quest for perfection continued on last night (Sat. Sept., 12, 2015) after the pound-for-pound best boxer on the planet absolutely dominated Andre Berto for 12 rounds inside the MGM Grand Garden Arena in Las Vegas, Nevada.

To watch Floyd Mayweather vs. Andre Berto full fight video highlights from last night right now click here!

After the title fight -- which was Floyd's last -- the mixed martial arts (MMA) world took to Twitter to mostly vent their frustrations at witnessing another typical Mayweather performance, which included a lot of defense and not much offense.

Check out their reactions:

Justin Bieber VMAs performance was so bad Mayeeather dropped him on the walkout #MayweatherBerto

— Derek Brunson (@DerekBrunson) September 13, 2015

This fight is over already. Berto just looking to cash that check

— Kevin Lee (@MoTownPhenom) September 13, 2015

Boring ass fight

— FranCisco Rivera (@CiscoRiveraUFC) September 13, 2015

So glad we didn't pay for this... Half the room is asleep #MayweatherBerto

— Al Iaquinta (@ALIAQUINTA) September 13, 2015

Keep the money, I want my 2 hours back. #MayweatherBerto

— James Krause (@TheJamesKrause) September 13, 2015

How did this fight happen anyways. Mayweather is #1 and Berto is #22 #MayweatherBerto

— Derek Brunson (@DerekBrunson) September 13, 2015

Can someone explain why Floyd can drink Gatorade during the fight and yet the #NSAC threatens to suspend us for anything but unsealed h2o???

— Mike DOLCE (@TheDolceDiet) September 13, 2015

It's insane this two have "fought" for going on 12 rounds. Not a mark on either of them. #mmatakeover Mma vs boxing?? Easy decision nowadays

— Michael Johnson (@FollowTheMenace) September 13, 2015

#TMT might be the only corner Ive seen allowed to drink #Gatorade during a fight lol. All us peasants are demoted to water #MayweatherBerto

— Aljamain Sterling (@FunkMaster_UFC) September 13, 2015

And at least on fighter believed Berto actually won the fight.

Mayweather is definitely not the #TBE and even @AndreBerto knows that. Berto won that fight and pushed the pace the whole fight

— Robbie Peralta (@PeraltaMMA) September 13, 2015

Finally, at least one person is happy Floyd has called it a day.

Now that the worst boxing era is over let's look forward to the next 10 years. #Canelo #Cotto #Golovkin #Lemieux

— Oscar De La Hoya (@OscarDeLaHoya) September 13, 2015

Burn.