For YouTube, the NFL’s first exclusive global live stream wasn’t just a high-profile experiment. It was a record-breaking moment. The Kansas City Chiefs vs. Los Angeles Chargers matchup in São Paulo drew 17.3 million global viewers, marking the largest live-streamed event in YouTube history. And yet, despite the headlines, it’s not a clean win, at least not in the eyes of legacy media rivals or measurement watchdogs.
YouTube’s broadcast drew 16.2 million viewers in the U.S., according to Nielsen data, with an additional 1.1 million international viewers, as reported by YouTube itself. That 17.3 million AMA (average minute audience) figure puts the stream ahead of Prime Video’s regular-season Thursday Night Football average of 13.2 million and well above last year’s NFL Week 1 streaming-exclusive game. However, the measurement comes with an important caveat: Nielsen employed a custom methodology for the YouTube stream, which isn’t Media Rating Council-accredited and is not available to other clients, a deviation that’s raising eyebrows.
NBC’s season opener (Eagles vs. Cowboys) still dominated with a 28.3 million viewer average, even after a 65-minute weather delay. And Netflix’s Christmas Day games outpaced both streamers, with more than 30 million viewers globally and 26.5 million U.S. viewers, according to Nielsen’s Big Data + Panel system.
YouTube’s edge wasn’t just in reach; it was in the format. This game wasn’t a traditional NFL broadcast repackaged for streaming. It was a creator-first presentation, featuring MrBeast, Marques Brownlee, Haley Kalil, and Michelle Khare integrated into pre-game, halftime, and alternate feeds. Fans could also opt into “Watch With” experiences hosted by IShowSpeed, CazéTV, and other creators offering companion commentary.
The result wasn’t just a large live audience, but one that skewed younger and more globally dispersed. Viewers came from over 230 countries and territories, according to Google.
While YouTube’s NFL moment was a win for streaming reach, it has created a flashpoint for the measurement debate. Executives at Fox Sports and ESPN openly criticized Nielsen’s handling of the event, calling the bespoke methodology a slap in the face and warning that the lack of transparency undermines trust. ESPN’s Flora Kelly emphasized that Nielsen’s YouTube approach was not a fair comp, especially as other networks shift toward using the newly accredited Big Data + Panel system.
Ironically, the NFL has voiced similar frustrations with Nielsen, arguing its legacy panels have undercounted audience size and lagged in recognizing the value of first-party data. That frustration may be part of what led the league to experiment with this unique YouTube approach in the first place.
