Conor McGregor and Floyd Mayweather converged at the T-Mobile Arena in Las Vegas yesterday for the "Grand Arrival" just four days before their much anticipated super welterweight fight. Naturally, the two fighters had some words to say to each other, which resulted in security guards from both sides jumping in to the scuffle.

According to the New York Post, McGregor once again expressed his confidence that he'll be able to knock Floyd out, saying he believes the 49-0 boxer will be unconscious within one round, adding "I'm starting to think I'll toy with him." He previously said he'd sleep Floyd within two rounds now that the two fighters will be wearing 8-ounce gloves.

Per the New York Post,

“I saw him, and I said, ‘What are you afraid of a faceoff today?’” McGregor said. “He didn’t say anything, and the big ghouls he surrounds himself with started pushing and shoving, and then it was a pushing and shoving contest. … He can’t walk around the place without being surrounded by these donkeys, [but] look, he’s in the ring on his own.

“I’m already the true king of fighting. I’ll be the king of boxing now, also.”

“[Mayweather] commented, ‘I hope the referee keeps it fair,’ and all I heard was, ‘Please, ref, keep me safe,’” McGregor said. “I may make him beg me to follow the rules here.

“I believe he’ll be unconscious within one round. … I don’t see him surviving. I’ll flatten him. … After that, I’m starting to think I’ll toy with him.”

But that's not all. Conor also crossed paths with former champ Paulie Malignaggi, who was his sparring partner until photos were released that showed a battered and beaten Malignaggi. Malignaggi repeatedly yelled at McGregor to "bring his balls" to the fight this Saturday, while the UFC champ responded, "Get over it. You got your ass whooped."

And in addition to all that, Conor also got into a verbal spat with a Mayweather supporter. Check out the footage below, courtesy of ESPN's Brett Okamoto, and NBC Sports' Helen Yee.

Watch more of Malignaggi's comments about McGregor below.