Chiefs-Raiders Week 4 Clash Draws 28.4 Million Viewers, Most-Watched NFL Game of the Season

Kansas City beat Las Vegas 30-27 on Sunday, October 4, in a matchup of two teams that both entered the game 3-0. CBS announced Tuesday, October 6, that the broadcast drew 28.448 million viewers, making it the most-watched NFL game of the 2026 season and the most-watched Week 4 game on any network in the Nielsen people meter era, which dates back to 1988.

The network's own PR team confirmed the number, and outlets including Newsweek, NBC Sports, the Las Vegas Review-Journal and Sports Media Watch all carried the same CBS-sourced figure. Raiderswire.usatoday.com and the Elko Daily Free Press ran identical USA Today Network copy, so that's one report, not two independent ones.

Sports Media Watch, which tracks Nielsen data daily, added the context other outlets skipped. The Chiefs-Raiders window aired in 69% of the country, with a full 21% of the country getting a separate Broncos-49ers game instead. Viewership was up 20% from last year's Week 4 window, which featured Ravens-Chiefs and drew 23.77 million. Sports Media Watch also noted a caveat: Nielsen's methodology has changed significantly in recent years, with out-of-home viewing not folded in until 2020 and not fully accounted for until 2025, and the league is still in the second year of a new measurement system blending Big Data with its traditional panel, so comparisons to older seasons aren't perfectly apples-to-apples.

The Game Itself

The two teams traded leads nine times, coming down to the wire with the Raiders left just eight yards away from a shot at tying the game late in regulation. Raiders quarterback Kirk Cousins completed 31 of 52 passes for 365 yards and two touchdowns, including one to tight end Brock Bowers, but threw a game-ending interception in the final seconds that sealed the Chiefs' win. Patrick Mahomes threw for 225 yards and two touchdowns, while Kansas City running back Kenneth Walker III rushed for 177 yards and two touchdowns.

The result pushed the Chiefs to 4-0, the NFL's only unbeaten team in the AFC, and dropped the Raiders to 3-1 for their first loss of the season. Las Vegas tight end Brock Bowers, who only made his season debut two weeks ago, is already the Raiders' second-leading receiver with 24 catches for 202 yards and two touchdowns, trailing only Tre Tucker. Second-year running back Ashton Jeanty has racked up 429 yards of total offense on the ground and through the air under first-year head coach Klint Kubiak, who was the Seattle Seahawks' offensive coordinator last season.

CBS had assigned its lead broadcast crew, play-by-play announcer Jim Nantz, analyst J.J. Watt and sideline reporter Tracy Wolfson, to the game ahead of kickoff.

The Bigger Ratings Picture

The game wasn't an outlier. CBS says its NFL broadcasts are averaging 19.88 million viewers through four weeks, a 9% jump over last year's record pace, according to Nielsen's Big Data-plus-panel measurement. CBS's early doubleheader window, led by Patriots-Bills, averaged 15.23 million, up 13% year over year, and the network's full Sunday doubleheader hit 21.99 million, its most-watched October doubleheader on record. Over on Fox, the Rams-Eagles broadcast averaged 19.15 million, up 7% from a year ago.

Sports Media Watch points out the Chiefs have now headlined three of the season's seven most-watched windows, tied with the Dallas Cowboys for the most of any team, a reminder that both franchises get scheduled into the league's biggest windows more often than anyone else, which naturally inflates their audience totals relative to teams that rarely get a marquee slot.

Not every number is in yet. NBC's Nielsen figures for Sunday Night Football were still being reprocessed as of Tuesday evening, and complete ratings for the Colts-Commanders International Series game in London hadn't posted either, according to Sports Media Watch.

Both AFC West rivals are now off in different directions. The Chiefs have a Week 5 bye before facing the winless Los Angeles Chargers in Week 6, then a projected Sunday Night Football date against the defending champion Seahawks in Week 7. The Raiders play the New England Patriots on the road this Sunday, their first game without a chance to stay undefeated.