Dublin residents Peter Byrne and Rene Cadwell before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
McGregor fans chanting before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Fight fans on the concourse before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
A fight fan in a bar area before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fight fans take a smoke break before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fight fans on the concourse before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fight fans on the concourse before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fight fans arrive before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fight fans on the concourse before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Badou Jack, right, lands a punch against Nathan Cleverly on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Nathan Cleverly, right, throws a punch against Badou Jack on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Badou Jack, left, lands a punch against Nathan Cleverly on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Badou Jack, right, lands a punch against Nathan Cleverly on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Badou Jack, right, lands a punch against Nathan Cleverly on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Badou Jack, right, lands a punch against Nathan Cleverly on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Badou Jack celebrates after defeating Nathan Cleverly by TKO in the 5th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, defeats Francisco Fonseca with a technical knockout in their junior lightweight championship bout at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Gervonta Davis, above, after defeating Francisco Fonseca with a technical knockout in their junior lightweight championship bout at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Francisco Fonseca after being defeated by Gervonta Davis via technical knockout in their junior lightweight championship bout at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Gervonta Davis after defeating Francisco Fonseca, not pictured, with a technical knockout in their junior lightweight championship bout at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Lebron James takes his seat before the Floyd Mayweather Jr. and Conor McGregor fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Former boxer Mike Tyson, left, and NBA superstar Lebron James seated before the Floyd Mayweather Jr. and Conor McGregor fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Conor McGregor enters the arena before his fight against Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Conor McGregor enters the ring before his fight against Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Floyd Mayweather Jr., center, enters the ring before his fight against Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Mike Tyson and fans before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Steve Harvey before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Lebron James before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Ozzy Osbourne before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Steve Harvey and Paul Pierce before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Demi Lovato singing the national anthem before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr. before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr. enters the ring before his fight against Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr., left, hugs his father, Floyd Mayweather, before his fight against Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor enters the ring before his fight against Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor enters the ring before his fight against Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr. blocks a punch from Conor McGregor during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor takes a swing at Floyd Mayweather Jr. during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor, left, and Floyd Mayweather Jr. during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor takes a swing at Floyd Mayweather Jr. during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr., left, leans to avoid a punch by Conor McGregor during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Floyd Mayweather Jr., left, blocks a shot from Conor McGregor during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Conor McGregor, left, takes a punch at Floyd Mayweather Jr. during the first round of their fight at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Benjamin Hager Las Vegas Review-Journal
Gervonta Davis takes an elbow from Francisco Fonseca in the 1st round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis gets tied up with Francisco Fonseca in the 1st round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Francisco Fonseca, right, throws a punch against Gervonta Davis in the 3rd round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Francisco Fonseca, left, lands a punch against Gervonta Davis in the 4th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Francisco Fonseca, back, lands a punch against Gervonta Davis in the 6th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, right, throws a punch against Francisco Fonseca in the 5th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, right, throws a punch against Francisco Fonseca in the 6th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, throws a punch against Francisco Fonseca in the 7th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, throws a punch against Francisco Fonseca in the 5th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, throws a punch against Francisco Fonseca in the 5th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, throws a punch against Francisco Fonseca in the 8th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Gervonta Davis, left, throws a punch against Francisco Fonseca in the 7th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Andrew Tabiti, right, lands a punch against Steve Cunningham in the 1st round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Steve Cunningham, left, lands a punch against Andrew Tabiti in the 1st round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Steve Cunningham, right, gets tied up with Andrew Tabiti in the 8th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Steve Cunningham, right, lands a punch against Andrew Tabiti in the 5th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Steve Cunningham, right, lands a punch against Andrew Tabiti in the 4th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Fans trickle in before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fans relax by an outdoor patio before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fans relax before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Mike Hovsepian, center, heads to his seat before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Conor McGregor fans, from left, Everett Johnston Jr., Ruby Freeman, Paul Tauber and Everett Johnson talk the famed UFC fighter takes on Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Conor McGregor fan Everett Johnson orders beer before the famed UFC fighter takes on Floyd Mayweather Jr. at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Merchandise on the concourse before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
People line up for merchandise before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Fans outside before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
A production crew moves a screen before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
People arrive at T-Mobile Arena before Floyd Mayweather Jr. takes on Conor McGregor Saturday, Aug. 26, 2017, in Las Vegas. Chase Stevens Las Vegas Review-Journal
Dublin resident Rene Cadwell before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Yordenis Ugas, right, lands a punch against Thomas Dulorme in the 2nd round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Yordenis Ugas, right, lands a punch against Thomas Dulorme in the 8th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Yordenis Ugas, left, lands a punch against Thomas Dulorme in the 9th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Yordenis Ugas, left, lands a punch against Thomas Dulorme in the 10th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
Yordenis Ugas, left, lands a punch against Thomas Dulorme in the 10th round on Saturday, Aug 26, 2017, at T-Mobile Arena, in Las Vegas. Benjamin Hager Las Vegas Review-Journal @benjaminhphoto
The venue before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
The Fox News station in front of the venue before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Manjit Singh before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Feathered girls crossing the intersection before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
McGregor fans before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
The official Mayweather merchandise store before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Roberto Rodriguez selling miniature boxing gloves before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
English residents Terry Watson and Jamie Cooper in themed outfits before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
English residentsTerry Watson, left, and Jamie Cooper, right, before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
An Irish flag being carried around before Floyd Mayweather Jr. takes on Conor McGregor at T-Mobile Arena, Saturday, Aug. 26, 2017, in Las Vegas. Morgan Lieberman Las Vegas Review-Journal
Excitement filled the air Saturday inside and outside T-Mobile Arena on the Las Vegas Strip for the megafight between Floyd Mayweather and Conor McGregor.
The fight is scheduled to start by 8:30 p.m.
More Mayweather-McGregor: Follow all of our Mayweather-McGregor coverage online at reviewjournal.com/maymac and @RJ_Sports on Twitter.