Conor McGregor, the brash U.F.C. champion, takes on undefeated boxer Floyd Mayweather Jr. in the most anticipated boxing match in years. Coverage of the fight in Las Vegas begins at 9 p.m. Eastern, but the main event is expected to begin much later. Stay here for live, round-by-round updates and analysis. How to watch.
It will be interesting to see how big McGregor looks tonight compared to Mayweather. At the weigh-in yesterday, McGregor checked in at 153 pounds and said that by fight time he would be “close to 170.