Las Vegas, Nevada - Ryan Burton catches up with Phil Lo Greco to discuss his late acceptance to face undefeated Errol Spence Jr. (16-0, 13 KOs) puts his record on the line against Phil Lo Greco in the biggest challenge of his young career. The PBC on NBC action begins at 8:30 p.m. ET/5:30 p.m. PT.

In the main event, former welterweight champion "Showtime" Shawn Porter (25-1-1, 16 KOs) collides with former three division champion Adrien "The Problem" Broner (30-1, 22 KOs), which headlines the Premier Boxing Champions on NBC primetime event later tonight from the MGM Grand Garden Arena.

Tickets for the live event, which is promoted by Mayweather Promotions in association with TGB Promotions, are priced at $400, $300, $100 and $50, not including applicable service charges and taxes go on sale Monday, May 18. To charge by phone with a major credit card, call Ticketmaster at (800) 745-3000. Tickets are also available at

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One of boxing's biggest stars, Broner, the 25-year old phenom who has collected world titles at 130, 135 and 147 pounds, is looking to add another win to his impressive resume. The Cincinnati-born star scored a dominant victory over John Molina Jr. on March 7 at MGM Grand and will look to return to the same big stage and take down his fellow Ohio-native Porter. Broner has prevailed over the likes of Paulie Malignaggi, Daniel Ponce de Leon and Antonio Demarco on the way to becoming a three-division champion.

An athletic marvel, the 27-year-old Porter is eager to keep his momentum going after scoring a fifth-round knockout over Erick Bone on the inaugural March 13 PBC on Spike fight. The Akron-native dominated Devon Alexander in December 2013 to win his previously held world title. He followed that up by overpowering former two-division champion Paulie Malignaggi with a fourth round stoppage in April 2014.