49ers Welcome Back "Bullies" Samuel And Greenlaw

The 49ers made their preseason schedule feel a lot more dangerous this year. Not with flashy new draft picks or blockbuster free agent signings, but by bringing back two of the grittiest players in recent NFL history. When Dre Greenlaw and Marlon Williams return to the 49ers defense in 2026, they're not just adding talent—they're bringing back a mindset that made this unit one of the most feared in football. This isn't about stats or highlight reels.

It's about what happens when you've got guys who genuinely don't like seeing their teammates get hurt. What Are We Talking About? Let's get specific about who we're bringing back. Dre Greenlaw, the undersized but relentless linebacker from the 2019 draft class.

Marlon Williams, the former Buffalo Bill who signed with San Francisco in free agency last year. Both players carry that reputation for physical play that sometimes pushes the boundaries of what's allowed. Greenlaw earned his "Bully" nickname through years of taking on blockers head-on, slamming into receivers at the line of scrimmage, and delivering punishing hits in the running game. Williams brought that same mentality from his college days at Texas, where he was known for putting his body on the line for every single play.

These aren't soft players. They're the kind of guys who'll take a helmet to make a tackle because they know someone else's kid is counting on them to make that play. Why This Matters for the 49ers Defense The 49ers defense spent too much of 2024 and 2025 looking like a collection of talented individuals who hadn't quite figured out how to play as a unit. They had the pieces—Devante Adams, Nick Bosa, Arik Armstead—but something was missing in terms of collective nastiness.

When Greenlaw and Williams are playing at full intensity, opposing offenses start to think twice about certain routes. Running backs begin to see greenlaw coming downhill and suddenly remember there's a safety rotting in coverage. Quarterbacks start checking down more often because they know what's waiting for them in the middle of the field. There's an intangible element that's hard to quantify.

Teams that face defenses with players who genuinely don't back down from contact tend to make more mistakes. They hold the ball longer. They attempt tougher throws. They take more shots down the field because they feel like they can escape pressure that isn't really there.

How These Players Change the Dynamic Greenlaw's Unique Blend of Size and Aggression At 5'10" and 230 pounds, Greenlaw shouldn't be able to play the way he does. But he does. He's got a combination of speed and aggression that makes him a nightmare in space. Run screens?

He's usually the first guy in the backfield. Checkdowns? He's already in the receiver's pathway before the ball gets there. What makes Greenlaw special isn't just his willingness to engage—everybody wants to make tackles.

It's his ability to do it in a way that affects the entire offensive unit. When quarterbacks see him coming, they start altering their timing. When running backs know he's coming hard on every play, they start looking for easier options. Williams Brings Veteran Leadership and Physicality Williams might be the more traditional linebacker in terms of size and frame, but his impact goes beyond what the box score shows.

He's the kind of player who shows up early for meetings, stays late on the field, and makes sure everyone else is doing the same. His presence in the huddle matters. When you've got a player who's been to the playoffs, who understands what it takes to win at the highest level, younger players listen. And right now, the 49ers have a lot of young players who could benefit from that veteran presence.

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What Most People Miss About This Return Here's what the casual observer doesn't always understand: it's not about the individual talent. It's about the ripple effect throughout the entire defensive unit. When Greenlaw and Williams are playing with that chip on their shoulder—whether it's about last year's playoff exit or about proving themselves worthy of championship expectations—the entire defense feeds off that energy. Look at how other teams respond to physical defenses.

They start taking more risks. They try to do too much. They make decisions based on emotion rather than execution. That's exactly what the 49ers want to create when these two are playing at maximum intensity.

The beauty of having both players return is that they complement each other perfectly. Greenlaw provides the downhill aggression and speed in space. Williams offers the traditional linebacker skills and veteran savvy. Together, they make the middle of the field a lot less comfortable for opposing offenses.

The Impact on Scheme and Strategy Coaches love players who make their jobs easier, and Greenlaw and Williams both do exactly that. They allow the 49ers to be more aggressive with their coverage schemes because they know these two can handle the runners if they get behind the front seven. This freedom to be more creative with looks and alignments is huge. Instead of playing conservatively to prevent big plays, the defense can afford to be more disruptive because they've got guys willing and able to make plays in the backfield.

Also worth noting: both players seem to thrive under pressure. They don't fold when games get physical. If anything, they become more dangerous. That's exactly the kind of mentality you want in October when playoff games are decided.

What This Means for the Rest of the Unit Don't overlook how these two players affect everyone around them. When Greenlaw and Williams are making noise and establishing their presence early in games, it gives permission to the defensive backs to be more aggressive with their routes and breaks on the ball. It also affects how the front seven plays. Defenders feed off the energy of guys who are willing to take hits and deliver them.

Suddenly, the defensive line feels like they can be more disruptive because they know help is coming. This is why championship defenses are rarely built around superstars alone. They're built around collectives of players who make each other better. Greenlaw and Williams, with their respective reputations and playing styles, have that ability to elevate everyone around them.

The Bottom Line for 2026 If the 49ers are going to make another deep playoff run—and many are predicting they'll be in the mix for another NFC West title—their defense needs to be the unit that wins games when offense stalls or turnovers don't go their way. Greenlaw and Williams returning gives them that physical edge they've been missing. Not because they're perfect players, but because they're exactly the kind of players who make opponents uncomfortable. In a league where most teams are trying to avoid contact, having guys who seek it out and excel at it is worth more than most people realize.

It changes field position. It changes field awareness. It changes everything about how games are played once these two are fully healthy and playing at 100%. The 49ers know what they have in Greenlaw and Williams.

Now it's up to them to make sure the rest of the league remembers it too.