The popular soccer commentating duo known as the Men in Blazers is leaving ESPN for NBC Sports, becoming the latest in a series of recent bets on soccer's rising popularity in the U.S.

Starting shortly after the 2014-2015 Premier League season begins later this month, the Men in Blazers, as television producer Michael Davies and writer Roger Bennett are known, will have a weekly Monday night show on NBC Sports and will contribute radio, TV and written pieces for the network's various outlets. The terms of their contract weren't disclosed, and the show doesn't yet have a name.

Messrs. Davies and Bennett, who have hosted a podcast about soccer for several years, were already popular among dedicated U.S. soccer fans before they began making television appearances on ESPN during the World Cup in Brazil. They have a shared lingo with fans—whom they call GFOPs, or Great Friends of the Podcast—and have hosted raucous live shows across the U.S.

But in Rio de Janeiro, where the pair made nightly appearances on ESPN from a tiny closet, their humorous commentary on the games attracted a new wave of fans. Recently, their comedy album made the top 10 on iTunes, and a show in Portland was live-streamed online by more than 100,000 people. During the show Mr. Bennett, 43 years old, said, "Not since Lewis and Clark have two men been so excited to be here."

The Men in Blazers now have more than 78,000 Twitter followers and are regularly recognized on the street by fans. The duo will be expected to bring those fans with them to NBC, which in 2012 spent $80 million to broadcast Premier League games.