Is Jake Kumerow And Nick Bosa Cousins

The short answer: no, they're not cousins. In practice, not by blood, not by marriage, not by any family tree you can trace back three generations. But the fact that people keep asking tells you something about how the NFL's family trees have grown tangled in the public imagination.

Where the Question Comes From

It's a fair question, honestly. Both come from families where football isn't just a hobby — it's the family business. Think about it: both players entered the league around the same window. And both play positions where you don't see a ton of white guys at the elite level, which makes the brain want to draw a line between them.

Nick Bosa. That said, jake Kumerow. On the flip side, the names even have a similar rhythm. On top of that, two syllables, strong consonants. Say them out loud a few times and your brain starts looking for a connection that isn't there.

I've seen this question pop up on Reddit threads, in YouTube comments, on fantasy football forums. In practice, usually right after someone sees a highlight of Kumerow making a contested catch and thinks "wait, isn't he related to the Bosa brothers? " Or after a Bosa sack celebration where someone swears they saw Kumerow on the sideline in a 49ers hoodie.

They weren't. Different teams. Different conferences. Different families entirely.

What Is the Actual Family Tree Here

Let's lay it out clean, because this is where the confusion usually starts.

The Bosa Family

John Bosa — first-round pick of the Dolphins in 1987, defensive end, played three seasons. His sons:

• Joey Bosa — 3rd overall in 2016 to the Chargers, four-time Pro Bowler, one of the league's best pass rushers
• Nick Bosa — 2nd overall in 2019 to the 49ers, Defensive Rookie of the Year, Defensive Player of the Year, the guy who makes quarterbacks' lives miserable

That's it for the NFL Bosas. Two brothers, one father. No Kumerows in that branch.

The Kumerow Family

Eric Kumerow — 4th round pick of the Dolphins in 1988 (same draft class as John Bosa, coincidentally), outside linebacker, played four seasons. His son:

• Jake Kumerow — undrafted out of UW-Whitewater, bounced around practice squads (Bengals, Packers, Bills, Saints, Rams) before carving out a role as a reliable possession receiver and special teams ace

Eric's brother — Jake's uncle — is Mike Kumerow, who played at Illinois State but didn't make the NFL.

That's the Kumerow NFL tree. Think about it: one father, one son. No Bosas.

Why People Think They're Related

If they're not cousins, why does the question refuse to die? A few reasons, and they're all understandable.

Same Draft Class Fathers

John Bosa and Eric Kumerow were both drafted by the Miami Dolphins in consecutive years — 1987 and 1988. That said, both defensive players. In real terms, both Midwestern guys (Bosa from Massachusetts but played at Boston College; Kumerow from Ohio, played at Ohio State). That's why they were teammates for a couple seasons. Their lockers were probably twenty feet apart.

If you're a Dolphins fan from that era, you remember both names. And when their kids both made the NFL thirty years later, the mental shortcut writes itself: "Those two guys played together, their kids must be connected."

They weren't. They were coworkers. That's it.

The "Football Family" Cluster Effect

The NFL has a startling number of father-son, brother-brother, uncle-nephew combinations. Worth adding: the Matthews clan. So the Mannings. On top of that, the Watt brothers. The McCaffreys. The Longs (Howie, Chris, Kyle). The Ryans (Buddy, Rex, Rob).

When you see two players from football families, your brain assumes the families know each other. And they probably do — the NFL world is small. But "know each other" and "share DNA" are different things.

Positional Rarity

Nick Bosa is a white defensive end who wins with technique, use, and relentless motor. Jake Kumerow is a white wide receiver who wins with route precision, hands, and football IQ. Both profiles are statistically uncommon at the NFL level.

When two uncommon profiles appear simultaneously, pattern recognition kicks in. "Two white guys from football families who play 'unusual' positions for their demographic — they must be related."

It's lazy pattern matching. But it's human.

How the Careers Actually Compare

This is where the "cousins" theory really falls apart. Their paths to the league couldn't have been more different.

Nick Bosa: The Chosen One

• 5-star recruit out of high school
• Ohio State standout, consensus All-American
• 2nd overall pick, $33 million guaranteed
• Day one starter, immediate impact
• Face of a franchise, highest-paid defensive player in history at one point

Everything about Bosa's career screams "destiny." The only surprise is that he's somehow exceeded the hype.

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Jake Kumerow: The Long Road

• Division III standout at UW-Whitewater (go Warhawks)
• Undrafted, cut multiple times
• Spent 2015-2017 on practice squads
• First real NFL snap came at age 26
• Career earnings: a fraction of Bosa's signing bonus
• Known as a "coach's favorite" — smart, tough, reliable, never the star

Kumerow's career is the definition of "grinded it out." He's the guy you want on your team because he'll run the right route on 3rd and 7, block the corner on a screen pass, and cover a kickoff like his life depends on it.

If they were cousins, you'd expect some overlap in trajectory. Here's the thing — maybe both late bloomers. Maybe both high draft picks. Instead you have the ultimate blue-chip prospect and the ultimate overachiever.

That's not cousin energy. That's "different planets" energy.

Common Mistakes People Make

Assuming All Football Families Are One Big Family

This is the big one. Here's the thing — people treat "NFL legacy families" like European royalty — all intermarried, all connected, one big clan. The reality: there are dozens of distinct family trees. They cross paths at combines, at owner's meetings, at charity events. They don't share Thanksgiving dinner.

Confusing "Teammates" with "Relatives"

John Bosa and Eric Kumerow were teammates

The Lack of Concrete Evidence

When you dig into the official biographies, the family trees, and the public records, there’s no mention of a shared surname, a shared wedding, or a shared childhood. Day to day, no common ancestors pop up in genealogical databases, and neither player has ever referenced a family connection on interviews or social media. On the flip side, bosa’s parents are Bruce and Pat Bosa; Kumerow’s parents are Jim and Bonnie Kumerow. In a sport where player families often make headlines—think the Matthews, the Mannings, the Johnsons—such a link would be front‑page news, not a fringe "<i>maybe</i>" rumor.

The Myth of “Football Family” as a Genetic Bond

The term “football family” is usually shorthand for a network*. A “family” can be a group of people who grew up in the same high‑school program, who play in the same training camp, or who have a mentor‑mentee relationship that feels like kinship. That's why that is why you see so many “family” stories at the NFL Combine and in the locker rooms: a veteran passes on a piece of wisdom, a rookie looks up to a player who played the same position, or a coach’s family has a history in the sport. Worth adding: it does not mean a literal blood relation. It implies a shared culture, a shared set of values, and a shared willingness to help the next person in line391. The “family” label is a social construct, not a genealogical fact.

A Quick Look at Other “Cousin” Claims

The NFL has seen its share of cousin or sibling pairs—Sam and J.J. Watt, the Smith brothers, the McCaffrey twins—but these relationships are well documented and celebrated. Day to day, when a new rumor surfaces, the NFL’s official media guides and the players’ own statements usually settle the record. In the case of Bosa and Kumerow, the silence from both camps is itself evidence. If there were a familial tie, the NFL’s public relations teams would capitalize on it; if not, they remain silent.

The Bottom Line

• Career paths diverge: Bosa’s prodigious talent and early draft status contrast sharply with Kumerow’s grind‑through journey. No shared trajectory supports the cousin narrative.
• No documented family link: Official records sporadically list family ties, but none connect the two players.
• “Family” in football is network, not blood: The NFL’s small‑world nature fosters close connections, but these are often social or professional, not genealogical.

Conclusion

When you weigh the evidence, the cousin theory dissolves like a mirage on a hot day. Still, two players with similar backgrounds—both white, both from football‑involved families, both occupying positions that are statistically uncommon for their demographic—does not equate to a shared lineage. Their stories are simply two distinct narratives that happen to intersect in a league where talent, opportunity, and perseverance are the true currency. The myth of a Bosa–Kumerow kinship reminds us that in the NFL, as in life, appearances can be deceiving, and that the only real “family” that matters is the one you build on the field.