Things are getting very personal, as heated words have been flying back and forth between five division world champion Floyd Mayweather and Mexican superstar Canelo Alvarez.
And now Canelo's promoter, Golden Boy Promotions CEO Oscar De La Hoya, has entered the fight.
Tempers began to flare up after Canelo criticized Mayweather in a recent interview with TMZ.
Mayweather has been discussing the idea of a comeback, to fight Khabib Nurmagomedov - after he was recently challenged by the UFC lightweight champion.
Khabib challenged Mayweather over the weekend, after coming face to face with Mayweather's company CEO, Leonard Ellerbe, at a boxing event in Russia.
In August 2017, UFC superstar Conor McGregor lasted 10 rounds, with Mayweather ultimately breaking him down and stopping him - to raise his perfect record to 50-0.
Mayweather retired after the McGregor fight, but now he's pondering the idea of a comeback against Khabib and then a rematch with Manny Pacquiao.
Canelo, who was dominated by Mayweather over twelve rounds in 2013, had voiced the opinion that Mayweather is hurting the sport by taking part in contests against UFC fighters like McGregor and Khabib.
If Mayweather wants a real return, Canelo is urging him to do the right thing - make the rematch.
"He wants to continue hurting boxing by making fights that don't make sense ... and not giving boxing the credibility it deserves," Canelo tells TMZ Sports.
"If he wants to return, I ask him to look my way to give a great fight to the fans. Let's do the second fight. It's very important. We have something pending there, so let's make the second fight."
Mayweather fired back at Canelo by calling him a "cheater" - which is a direct shot at the boxer testing positive for the banned substance clenbuterol earlier this year - and saw him get suspended for six months by the Nevada State Athletic Commission.
And he also threw water at Canelo's 11 fight, $365 million deal with streaming service DAZN.
"It didn’t matter if Canelo ate his PED steak or not this night, this was by far the easiest fight of my career," Mayweather said on social media.
"Connor McQuitter was a way better fighter than Canelo's cheating ass and I beat the breaks off him too! It takes me 36 minutes or less to make $300 million plus. It literally takes me 1 night and 1 fight to make what you might make in 5 years and 11 fights! So really, who's still winning? You do the math!"
And then De LaHoya jumped in the mix - after Mayweather posted an old photo of De La Hoya wearing fishnet stockings and heels -- and saying, "I fought her and her name is Oscar 'Golden Girl' Dela Hoya."
Mayweather then implored his fans on social media to "leave the most disrespectful caption you can think of" about De La Hoya.
De La Hoya fired back, poking shots at Mayweather's history with domestic abuses charges
"Hey, [Canelo], someone is salty about your record breaking contract with DAZN. Good thing we will never resort to hitting women," De La Hoya said.
He then added hashtags -- "#DomesticAbuser #DomesticViolence #Salty #antidomesticviolence #FloydMayweather #SaltyFloyd #FloydSaltyMayweather #whyyoumad."