How to Watch San Francisco 49ers vs Jacksonville Jaguars: 2025 NFL Season Opener – Week 4

The NFL has returned with all the intensity fans have been waiting for, and Week 4 of the 2025 season brings one of the most anticipated matchups on the schedule: the San Francisco 49ers taking on the Jacksonville Jaguars. While it may seem early in the season, this clash carries plenty of weight for both teams as they look to establish dominance and set the tone for the rest of the year.

For San Francisco, the season opener was delayed due to scheduling quirks and international commitments, making this Week 4 contest their first true showcase of what they’ve built for 2025. The 49ers are coming off a turbulent offseason filled with high-profile departures, injuries to key stars, and the usual heavy expectations that come with being a perennial contender. Fans have been eagerly waiting to see how head coach Kyle Shanahan adapts his offensive system with new personnel while maintaining the hard-nosed, balanced football that has defined this franchise in recent years.

The Jacksonville Jaguars, meanwhile, have quickly transformed from an underdog rebuilding project to one of the most intriguing young teams in the league. Led by quarterback Trevor Lawrence, Jacksonville has embraced its identity as a dynamic, aggressive offense with a defense capable of delivering game-changing plays. After making waves last season by sneaking into the playoffs, the Jaguars are determined to prove they are not a one-year wonder. This game against the 49ers offers them the perfect opportunity to measure themselves against one of the NFL’s elite.

What’s at Stake

This matchup goes beyond just another game on the calendar. For the 49ers, it’s about silencing critics who question whether their Super Bowl window remains wide open. Injuries to stars like Nick Bosa and lingering questions around quarterback play have fueled debates about their staying power. A strong performance against a hungry Jaguars squad would reaffirm San Francisco’s championship credentials.

On the other side, Jacksonville views this game as a chance to make a statement. Defeating a powerhouse franchise like San Francisco would solidify their status as legitimate contenders in the AFC. With Trevor Lawrence entering his prime and head coach Doug Pederson continuing to develop an innovative playbook, the Jaguars are eager to prove they belong in the same conversation as the league’s best.

Key Players to Watch

For San Francisco, eyes will naturally be on quarterback Brock Purdy. Entering his third full season as the starter, Purdy has been both praised for his poise and criticized for his limitations. This opener will provide a glimpse into whether he has taken the next step in his development. Running back Christian McCaffrey, assuming he is fully healthy, will also play a pivotal role. His versatility as both a runner and receiver makes him the engine of Shanahan’s offense.

Defensively, the 49ers will rely on a retooled pass rush led by a returning Bosa and new additions to the front seven. How well they contain Trevor Lawrence will determine much of the game’s outcome.

For Jacksonville, Lawrence is the obvious centerpiece. Now firmly established as one of the NFL’s top young quarterbacks, his ability to spread the ball to weapons like Calvin Ridley and Christian Kirk will test the 49ers’ secondary. Running back Travis Etienne provides balance, capable of breaking big plays both on the ground and through the air. Defensively, Josh Allen and Travon Walker will be tasked with pressuring Purdy and disrupting San Francisco’s offensive rhythm.

How to Watch

Fans in the United States can catch the action on FOX, which has the national broadcast rights for this Week 4 showdown. Kickoff is set for 1:00 PM ET on Sunday, September 28, 2025, at TIAA Bank Field in Jacksonville, Florida. For those who prefer streaming, the game will also be available on services like NFL+, Hulu + Live TV, YouTube TV, Sling TV, and FuboTV. International fans can tune in through the NFL Game Pass platform, which offers live and on-demand coverage worldwide.

What to Expect

Expect a hard-fought, physical contest with playoff-level intensity despite being only Week 4. San Francisco will look to impose its will in the trenches, leaning on McCaffrey and a tough defense to control the tempo. Jacksonville, on the other hand, will try to spread the field, using Lawrence’s arm talent and a fast-paced offense to keep the 49ers off balance.

The outcome may come down to which team wins the battle up front: San Francisco’s defensive line versus Jacksonville’s improving offensive unit. If the Jaguars can protect Lawrence, they have the weapons to exploit mismatches. But if Bosa and company dominate, the 49ers could remind everyone why they remain one of the NFL’s most feared teams.

No matter which side comes out on top, this game promises to be one of the most exciting matchups of the early 2025 season. Fans should buckle up for four quarters of high-stakes football that could set the tone for both franchises moving forward.