Floyd: "I try not to think about losing, taking an L. I was born to be a winner. I wouldn't be where I'm at if I didn't take risks. I don't mind putting my 49-0 record on the line."

Asked about fighting now at age 40, Floyd said, "I don't think I'm the same Floyd Mayweather I was 21 years ago. Of course, not. I'm not even the same Floyd Mayweather I was even five or two years ago. But I still have a high IQ in that ring. Experience leans toward me because I have been at such a high level for so long."

Asked about the change of glove size from 10 ounces to 8 ounces for the fight with Conor McGregor might impact the outcome, Floyd said, "I'm not really worried about the outcome. I want to make him comfortable as possible. I don't want any excuses."

Why does the Nevada State Athletic Commission have rules if they are willing to change them for one fight and allow Floyd Mayweather and Conor McGregor to box in 8-ounce gloves when the rule is clearly 10-ounce gloves for the 154-pound weight class the fight is taking place in? The commission claims the rules are in place as a matter of safety and the Association of Ringside Physicians, a leading group of medical professionals dedicated to the health and safety of boxers and mixed martial artists, wrote the commission a letter saying the rule should not be waved. Yet, the commission changed the rule for no apparent reason. What’s next, allowing glass-coated gloves or for the fighters to be allowed to use chairs WWE-style?

Conor McGregor said he was very pleased with how the Nevada State Athletic Commission handled the request for the change in glove size from 10 ounces to 8 ounces. He also said he had not yet decided what brand of gloves he will wear. Floyd Mayweather has already said he will wear the same Grant brand gloves he always wears.

"I'm very happy with how the promotion has gone." -- Conor McGregor says. After the fight he said he plans to relax on a yacht and begin the "counting game," as in all the money he is going to rake in.

"This is a special historic event and everybody is excited about it." -- Conor on the fight with Floyd. Conor also said he has seen some of the comments mocking how he looked in his open workout and said it means nothing to him and it's no big deal.

Asked about an eventual fight with Paulie Malignaggi, Conor said he should "join the queue" of people who want to fight him. "He got his ass whopped (in sparring)."

"I believe it's fair mix across the board. It was fair all the way through," -- Conor on the judges selected for the fight.

"I do not care about his record. I do not care about his achievements." -- Conor McGregor on Floyd.

"We are prepared for every possible outcome," Conor McGregor said. He said with 8-ounce gloves Mayweather won't make it out of the second round. "Part of me wants to show some skill and dismantle him that way" but he prefers the early knockout. "I'm ready to put him away in the first 10 seconds."

Conor McGregor, asked about what's next after the fight with Floyd, "Right now we're focused on putting him away on Aug. 26 and then we'll see what happens."

Conor McGregor says this is another "mega blockbuster" event like the others he's used to. He said he is happy to have his infant son around him in Las Vegas as he trains for the fight with Floyd Mayweather.

Conor McGregor said he's disappointed by the "disrespect and disregard" for his skills from those who have criticized the fight with Floyd Mayweather. He said it's motivating to him and that he just wants to put on a good fight or the fans who are supporting it.

Speaking on media conference call, Conor McGregor said he's not worried about the 12-round distance, which is a lot different than he is used to in UFC. He said he has been 12 rounds in camp several times and that he has adjusted his cardio program in preparation for the fight with Floyd Mayweather.

UFC flyweight Sergio Pettis, younger brother of former lightweight champion Anthony Pettis, scores a huge win over Brandon Moreno at UFC Fight Night in Mexico City. Pettis overcame a disastrous first round to win the next four rounds. He improves to 7-2 in the UFC and the future is extremely bright for this just 23-year-old.

Tough times continue for former UFC light heavyweight champion Rashad Evans. The 37-year-old dropped a split decision to Sam Alves at UFC Fight Night in Mexico City. He has now lost four in a row and hasn't won a fight since November 2013.

A fun, close bantamweight fight opens the UFC main card. Alejandro Perez (18-6-1) edges a good effort from Andre Soukhamthath (11-5), despite suffering multiple knockdowns in the first and second rounds. Perez wins via split decision.

Main card at UFC Fight Night in Mexico City starting now. High altitude not a factor so far ... Five of the first six fights have ended in the first round. Tonight's main event is a five-round flyweight fight between Sergio Pettis and Brandon Moreno.