Warning: this episode contains strong language.

Over the past five years, one sports league has gained popularity faster than any other: Ultimate Fighting Championship, or U.F.C.

Matt Flegenheimer, a correspondent for The Times, discusses the man behind the league and how his longtime friendship with President-elect Donald J. Trump has transformed what once was a fringe sport into a culture and political powerhouse.

Guest: Matt Flegenheimer, a correspondent at The New York Times who focuses on in-depth profiles of powerful figures.

Background reading: 

• Dana White, the U.F.C.’s chief executive, has shot to the peak of Trump-era culture and political influence. What does he want?

For more information on today’s episode, visit nytimes.com/thedaily. Transcripts of each episode will be made available by the next workday.

Unlock full access to New York Times podcasts and explore everything from politics to pop culture. Subscribe today at nytimes.com/podcasts or on Apple Podcasts and Spotify.