Wall Street likes to think it hires talent. Grades matter, degrees matter, interview performance matters, and eventually, results decide who stays and who advances. The narrative around elite hiring has always centered on credentials, the right school, the right GPA, the right internship, the right resume.
A new study from Harvard, Duke, and Wharton researchers suggests that narrative is incomplete in a specific and instructive way. The researchers, Paul Gompers, George Hu, Will Levinson, and Sachin Srivastava, tracked the first jobs of 120,306 Ivy League graduates and set out to test something Wall Street recruiters had long insisted anecdotally: that being a college athlete created a meaningful hiring advantage.
What they found was more specific than anyone expected. Having just one former teammate already at a firm increased the probability of another athlete joining that employer by nearly 194%. Not the diploma, not the GPA, not the general alumni network that most people assume drives elite hiring, but the teammate.
What The Research Is Actually Measuring
The researchers were precise about why the effect was so powerful. “Broad school ties do relatively little,” one co-author told Fortune. “The pull comes from intensive shared experiences like a varsity team.” That distinction matters more than it might initially appear.
The study isn’t measuring networking in the conventional sense, the LinkedIn connection, the alumni directory reach-out, the career fair introduction. It’s measuring something different and more powerful. It’s measuring what happens when one professional can speak to another’s capability from direct, sustained, high-pressure personal experience.
A former teammate at Goldman Sachs who says “I know what this person is like when the pressure is highest” is offering something no credential can replicate. They’re offering firsthand testimony about how someone performs, how they handle failure, how they show up for the people around them when the stakes are real. That testimony carries weight precisely because it’s earned through shared experience, not asserted through a resume or demonstrated in a 45-minute interview.
Harvard Business School Professor Paul Gompers, one of the study’s co-authors, put it directly: “How well you do in your career is highly dependent upon what an economist calls human capital and social capital.” Human capital is the skills you bring. This research, he said, explores the second channel, “the networks and reputational effects that don’t show up on a resume.”
The Professional Implication Most People Miss
The natural reading of this research is that it confirms what most people already suspect, that elite networks produce elite outcomes, and that access to those networks is concentrated among a small group of credentialed institutions. That reading is accurate but incomplete.
Because what the research is actually identifying, beneath the Ivy League context it was studied in, is a universal career dynamic that applies at every professional level, in every industry, at every institution. The most powerful career asset most professionals carry isn’t their credential. It’s the accumulated testimony of people who have worked alongside them at close range and can speak to what they’re actually like under pressure, in collaboration, and when the work is genuinely difficult.
I spent more than twenty years inside global organizations in People and Talent — sitting in the calibration rooms and succession planning conversations where the real decisions about who advances get made. And the pattern the Harvard, Duke, and Wharton researchers identified in their data is the same pattern I watched determine outcomes in those rooms for two decades.
The professionals who moved fastest weren’t always the most credentialed. They were almost always the ones with the strongest, most specific internal advocates, people who could say, from direct experience, exactly what this professional was capable of and why they were the right choice. Not because they were liked, but because they were known.
The Relationship Resume
In my book The Ultimate Impression, I write about what I call the Relationship Resume, the professional document that never gets printed, never gets submitted, and never gets formally evaluated, but determines more career outcomes than the formal one.
It’s the accumulated record of every professional relationship you’ve invested in deeply enough that the other person could speak to your capability from personal experience. Every project where you showed up fully. Every colleague you supported when it wasn’t required. Every professional relationship you maintained long after the shared context that created it had ended.
The Harvard, Duke, and Wharton study is measuring the Relationship Resume in the most quantifiable context available, Ivy League athletics and Wall Street hiring, and finding that its influence on career outcomes dwarfs what most people assume the formal credential produces.
A 194% increase in hiring probability doesn’t come from a diploma. It comes from the specific, compounding, transferable credibility that builds when someone who has been inside an experience with you can say, from direct knowledge, not inference, that you are someone worth betting on.
What This Means For Professionals Who Didn’t Play Varsity Sports
The researchers themselves note that the findings may not extend beyond the Ivy League context they studied. The specific pipeline effect, one teammate at a firm tripling another’s odds is a function of the concentrated, high-intensity shared experience that varsity athletics provides. But the underlying mechanism is not exclusive to athletes or elite institutions.
Intensive shared experience builds the kind of trust and familiarity that translates into career advocacy. That experience can come from a varsity team. It can also come from a demanding project that required genuine collaboration under real pressure. A startup where the stakes were high and the team was small. A difficult client engagement where the work was hard and the people you worked with saw exactly how you handle difficulty.
The question is not whether you played a sport at an elite institution. The question is whether you have people in your professional network, across organizations, across years, across contexts, who know what you’re actually like when the work is genuinely hard. And whether you’ve invested in those relationships deliberately enough that they would advocate for you in a room you’re not in.
Building It Deliberately
The professionals I watched build the strongest Relationship Resumes over the course of demanding careers shared a specific orientation toward professional relationships that most people never develop explicitly. They treated the quality of their presence in shared work as the thing that mattered most. Not the outcome alone, the outcome is visible to everyone. The quality of who you were during the process is what the people who worked alongside you carry forward.
They maintained the relationships after the context ended. The project finishes, the team restructures, and the organization changes. Most professionals let those relationships fade with the context that created them. The professionals with the strongest Relationship Resumes treated the relationship as the asset, independent of the shared context that built it.
They gave before they needed. The professional network that moves for you when an opportunity appears was almost always built through investment made long before any specific opportunity was visible. The people who advocate most powerfully for someone they’ve worked alongside aren’t doing it because they were asked. They’re doing it because the relationship was real, and the investment was genuine, and the memory of what that professional was like under pressure is still vivid enough to be worth sharing.
The Finding That Matters Most
Harvard, Duke, and Wharton researchers studied 120,306 graduates and found that a former teammate tripled hiring odds at elite financial firms. The mechanism behind that finding, shared high-pressure experience producing specific, credible, firsthand advocacy, is not unique to Wall Street or the Ivy League.
It is the fundamental dynamic behind every career that advances through relationships rather than credentials alone. And it is available to every professional who decides to build it deliberately, through the quality of presence they bring to shared work, the consistency with which they show up for the people around them, and the investment they make in professional relationships long after the immediate context that created them has ended.
The diploma gets you in the room, but The Relationship Resume determines what happens when you’re in it and who speaks for you when you’re not.
About Isaac Adesugba
Isaac is a Southern California-based Global People & Talent Management Executive, author of The Ultimate Impression (available in English, Spanish, and Portuguese on Amazon), and corporate readiness speaker. He works with professionals, universities, and organizations on the trust and credibility disciplines that determine career trajectory before any formal evaluation process begins.
First 90 Coach, his free AI coaching tool built on these frameworks, is now rebranding to The Impression Advantage Coach — available on the OpenAI GPT Store.
The Impression Advantage Workshop — a half or full-day engagement for new hire cohorts, newly promoted managers, and organizations navigating transition is also available. Request a proposal at careeradvicebyisaac.com.
