Week 4 Is When Football Gets Real: The 49ers-Broncos Clash and Why These Matchups Define September Football

Here's the thing about Week 4 in the National Football League that most folks don't understand. You got your Week 1, which is like the kickoff party before the real party starts. Everybody's healthy, everybody's ready, the coaches got their game plans all pretty and organized like they just came off the copy machine. Week 2, things start getting a little real but not too real. Week 3, you start seeing who's got problems, who's got injuries, who's figured things out faster than everybody else. But Week 4? That's when you know who you are. That's when pretenders start showing up on film, and honest football teams start showing you what they're made of. This week, with the 49ers going to Denver to take on the Broncos, and the Colts heading all the way over to London to play the Commanders, we got ourselves some genuine football that means something.

Let me tell you what I see when I look at the 49ers coming into this thing. San Francisco has got one of the most talented rosters in football, no question about it. Kyle Shanahan's running one of the sharpest offensive schemes you'll see anywhere in this league. But here's what matters in Week 4. Do they know who they are yet? Are they past all that early-season rust? The Niners have got the weapons. Brock Purdy is a guy who shouldn't even be in the NFL according to the draft order, but he's out there proving that a lot of what matters in football doesn't show up in the combine. He's got an offensive line in front of him that can move people around. He's got receivers who know how to get open. He's got running backs that are tougher than a two-dollar steak. But Denver's coming at them with a defense that's been hungry, and that matters more than people think in September football.

The Broncos defense is one of those units that's built to hurt you in the trenches. They got pass rushers who understand that getting to the quarterback is ninety percent effort and ten percent technique, and effort is free. When you're playing the Broncos in Denver, where the altitude gets to you and the air is thin, you're not just playing football. You're playing football while your lungs are working overtime. That's real football. That's the kind of thing that separates the teams that are just talented from the teams that are ready to go out and dominate. Denver's got corners who can cover, and if you can't throw it deep because the pass rush is getting there, well, you're in for a long day.

What's interesting to me is that this game tells you something about whether the 49ers are going to be the kind of team that wins in January or whether they're going to be the kind of team that looks great in September and October and then gets sent home when it matters. Playing in Denver in Week 4 is like a test. It's like a midterm exam before the real season gets rolling. The Niners can handle this if Purdy doesn't get happy feet and if the offensive line keeps that pass rush off him. If they can establish the run game with that power running scheme, they're going to win this thing going away. But if Denver's defense gets in Purdy's chest, if they force him to beat them with his arm all game long against a secondary that's got some teeth in it, then you're looking at a different story.

Now let's talk about what's happening across the pond over in London. This is one of those games that gets everybody talking about London's relationship with the NFL, and I'll tell you something. Folks make a bigger deal about playing in London than the teams that have to actually go over there and play. It's a long flight, it's different, but you know what? Both teams are going to be tired. Both teams are going to deal with the jet lag. The team that executes better and tackles better and doesn't beat themselves is going to win. That's real football logic right there.

The Colts are bringing a young team with some questions at quarterback and up front. Anthony Richardson is a physical specimen, but he's still a kid figuring out how to lead an NFL offense. The Colts have got Jonathan Taylor at running back, and when you got a guy like that, you can lean on him to do the heavy lifting. You can build your offense around getting that man the football in space and letting his instincts take over. But you got to protect your young quarterback, and that's where things get dicey. The Colts offensive line has got some work to do still. You can't have your young quarterback getting hit too much in the pocket, especially early in the season when everybody's still trying to figure out who they are.

Washington is bringing a Commanders team that's had some ups and downs already. Their defense is fast and aggressive, which is good, but sometimes being too aggressive can hurt you because you leave gaps open and you get caught playing out of position. Jayden Daniels is a dynamic young quarterback who can make throws and move around, and that's the kind of thing that can give you problems in the secondary. The Commanders secondary is going to have to be sharp because if they're not, Daniels is going to make them pay. But if they can get after Richardson and disrupt his timing with the pressure, they can make him uncomfortable and that young offense might start making mistakes.

Here's what I think most people are missing about Week 4. These games matter not because they're going to decide the Super Bowl in September. They matter because they tell you about a team's character and a team's ability to execute under pressure. The 49ers going to Denver and trying to establish themselves as elite? That's a character test. The Colts going to London and dealing with all that adversity? That's a character test. Teams that pass these tests don't just move on to the next week. They build a foundation. They build momentum. They start believing something about themselves that's hard to shake.

When you look at the 49ers, I'm looking for them to handle this thing because they got the experience and they got the talent level. Shanahan's got a scheme that travels well, and Purdy's a guy who doesn't get rattled. But if Denver comes out and establishes that they're going to make this a physical football game, if they set the tone early and make San Francisco play their game instead of running their offense, then you got yourself a real battle. I'm looking at the physicality. I'm looking at execution in the red zone. I'm looking at turnovers. That's where Week 4 games get decided.

With the Colts and Commanders, I'm looking at the same things. London's going to be what it is. The jet lag is real, but it hits everybody. The question is whether the Colts can lean on their power running game and keep that young offense on schedule, or whether Washington's pass rush can disrupt things enough to make this a shootout. These young quarterbacks have talent, but they haven't proven they can win in every environment yet. This is a chance for one of them to show something.

Here's why you should care as a fan. Week 4 is where pretenders turn into contenders or contenders start showing cracks. The 49ers proving they can win on the road in a tough environment? That matters for the playoffs. The Colts showing their young quarterback can compete at a high level in a weird situation? That matters for building something. These aren't throwaway games that don't mean anything. These are games that start writing the story of the season. You watch these games and you're going to know more about what September means for January.