Billy Seidl was a name mostly known inside college baseball circles until his relationship with reality television personality Brielle Biermann pushed him into the public eye. Since then, people have wanted to know everything about him, from his age and family background to his playing career and current net worth.
This guide pulls together verified details about Billy Seidl’s life, from his early years in Massachusetts through his time at Duke University, his stint in the Chicago White Sox farm system, and his more recent pivot toward a career in finance. Whether you found him through Brielle Biermann’s Instagram or through minor league baseball news, here is everything worth knowing.
Who Is Billy Seidl?
William Randall Seidl, better known as Billy Seidl, is a former minor league baseball pitcher and current investment analyst from Massachusetts. He built a reputation as a hard throwing right hander in high school and college before being drafted by the Chicago White Sox in 2022.
Off the field, Seidl is best known today as the fiancé of Brielle Biermann, daughter of Real Housewives of Atlanta alum Kim Zolciak and former NFL linebacker Kroy Biermann.
Billy Seidl Early Life and Family Background
Billy Seidl grew up in Massachusetts and attended St. Sebastian’s School in Needham from 2012 to 2019, excelling both athletically and academically. Beyond pitching, he was a four-year letterman at quarterback and a National Honor Society member with academic honors every semester.
Perfect Game USA ranked him among the state’s top right-handed pitching prospects. In his junior season, he won every game he started and earned both MVP and Most Valuable Pitcher honors in his league.
Billy Seidl Age and Physical Appearance
Billy Seidl was born on November 9, 1999, in Newton, Massachusetts. That makes him 26 years old as of mid-2026, with his next birthday bringing him to 27.
Physically, Seidl stands around 6 feet tall, a build typical of a starting pitcher who relies on control and repeatable mechanics rather than sheer size. His athletic frame carried over from his high school football days, when he played quarterback for four straight seasons.
Billy Seidl Collegiate and Amateur Development
Seidl enrolled at Duke University in 2019 to continue his baseball career at the Division I level, though he didn’t pitch in 2020 after the season was cancelled due to COVID-19. Across his two active seasons from 2021 to 2022, he posted a 6-5 record with a 6.55 ERA and 89 strikeouts over 68.2 innings as a starter, and was part of the Duke team that won the 2021 ACC Baseball Championship.
Even after being drafted, Seidl continued pursuing his degree, eventually graduating from Duke in June 2025 with a Bachelor of Arts in Sociology, Markets, and Management Studies — balancing professional baseball with college coursework over several years.
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Billy Seidl Transition to Professional Baseball
The Chicago White Sox drafted Seidl in the 15th round of the 2022 MLB Draft, the 461st overall pick, and he reportedly signed for a $100,000 bonus. He worked his way through three levels of the organization’s farm system, starting with the Arizona Complex League White Sox in 2022 before moving on to the Kannapolis Cannon Ballers and Winston-Salem Dash.
Competition grew tougher as he advanced, and in 2024 he posted a 5.92 ERA at the High-A level. The White Sox released him in March 2025, closing out a professional career that spanned roughly three seasons.
Billy Seidl still play baseball
As of 2026, Billy Seidl is no longer an active professional baseball player. After his release from the White Sox organization in March 2025, he did not sign with another club or pursue an independent league opportunity.
Instead, he shifted his focus toward finishing his Duke degree and beginning graduate studies in finance, a move that suggests his playing days are behind him for now. That said, he remains connected to the sport through family, since his brother Tommy Seidl also played college and independent league baseball.
Billy Seidl net worth
Estimates of Billy Seidl’s net worth vary widely, with some sources floating figures as high as $1-2 million — though none of those claims are backed by confirmed contracts or financial records. A more grounded estimate factors in his confirmed $100,000 signing bonus and roughly $60,000-$80,000 in cumulative minor league salary, with no known endorsement deals.
After accounting for taxes, agent fees, and living costs, a realistic net worth estimate falls somewhere between $100,000 and $300,000 as of 2026 — far more consistent with typical minor league economics than the inflated figures sometimes reported.
Billy Seidl Financial Picture and Net Worth Estimates
Minor league pay reflects why most players don’t build significant wealth from the game — since MLB raised minimum pay in 2021, rookie-level players earn roughly $19,800 a season, while High-A players make closer to $30,000.
Seidl’s path since retiring looks quite different. He’s now working as an investment analyst at Lion’s Park Capital while pursuing a Master’s in Finance at UVA’s McIntire School of Commerce, which he began in August 2025. That combination — a finance career built on degrees from Duke and UVA — points to a more stable, scalable income trajectory than a fringe roster spot in the minors ever could.
Billy Seidl family rich
Billy Seidl’s family is financially comfortable but not associated with extreme wealth or celebrity level fortune. His father, Randy Seidl, serves as CEO of Sales Community, a sales training and networking organization, which points to a professional, business oriented household rather than an athletic dynasty.
It is worth separating his family’s financial standing from that of his fiancée. Brielle Biermann grew up around reality television fame and a more publicly documented financial history through her mother, Kim Zolciak, and her father, Kroy Biermann. The Seidl family’s wealth, by contrast, comes from steady corporate career success rather than television or sports contracts.
The Role of Family, Billy Seidl’s Parents, Siblings, and Support
Family has clearly played a central role throughout Billy Seidl’s life. His parents, Randall and Janet Seidl, raised four children with a shared emphasis on both academics and athletics.
His siblings include:
- Tommy Seidl, who played college baseball at Harvard from 2018 to 2020 and later at Alabama from 2022 to 2023, before signing with the independent Capitales de Québec of the Frontier League
- Philip Seidl, his other brother
- Shannon Seidl, his sister
That family support extended into Billy’s relationship as well. Reports indicate that Brielle Biermann has built a close bond with Billy’s parents, which stands in contrast to some of the more turbulent family dynamics she experienced growing up on reality television.
Billy Seidl Brielle Biermann
Billy Seidl and Brielle Biermann began dating in early 2023 after meeting during separate vacations in the Bahamas, going Instagram official that April. Biermann, best known for her role on Bravo’s Don’t Be Tardy, is the daughter of Kim Zolciak and former NFL linebacker Kroy Biermann.
Seidl proposed in Scottsdale, Arizona in February 2024, reportedly seeking Kroy Biermann’s blessing beforehand — a detail that resonated with longtime fans of the family. The couple has since chosen Naples, Florida as their wedding venue, and as of early 2026 they’re continuing to finalize plans for what Brielle has described as an intimate ceremony.
Billy Seidl Key Highlights, Milestones, and Challenges
Looking back at his journey so far, a few moments stand out as defining points in Billy Seidl’s story:
- Winning ISL Most Valuable Player and Most Valuable Pitcher honors in high school
- Helping Duke University win the 2021 ACC Baseball Championship
- Getting drafted by the Chicago White Sox in the 15th round of the 2022 MLB Draft
- Struggling with a 5.92 ERA at the High-A level in 2024, which preceded his release
- Being released by the White Sox organization in March 2025
- Completing his Duke degree in June 2025 despite the demands of a professional playing career
- Enrolling at UVA’s McIntire School of Commerce for a Master’s in Finance
- Getting engaged to Brielle Biermann in February 2024
These milestones show a career that did not follow a straight line to the majors, but one that pivoted smartly when the path on the field narrowed.
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Looking Ahead, Prospects, Potential, and Financial Trajectory
Billy Seidl’s story going forward looks less like a baseball comeback and more like a career transition success story. With a finance degree from UVA in progress and current experience as an investment analyst, his long term earning potential is likely tied far more to the finance industry than to professional sports.
Athletes who move into finance, consulting, or business roles after their playing careers often see steady income growth over a ten to fifteen year window, especially when paired with graduate credentials from a respected program. If that pattern holds, Seidl’s net worth could grow meaningfully over the next decade, even without a return to professional baseball.
Profile Summary
| Detail | Information |
| Full name | Billy Seidl |
| Date of birth | November 9, 1999 |
| Birthplace | Newton, Massachusetts |
| Age | 26 (as of 2026) |
| Height | Approximately 6 feet |
| High school | St. Sebastian’s School, Needham, Massachusetts |
| College | Duke University, graduated 2025 |
| Draft | Chicago White Sox, 15th round, 2022 |
| Signing bonus | $100,000 |
| Estimated net worth | $100,000 to $300,000 |
| Current role | Investment analyst at Lion’s Park Capital, graduate student at UVA McIntire |
| Parents | Randall (Randy) Seidl and Janet Seidl |
| Siblings | Tommy, Philip, and Shannon Seidl |
| Fiancée | Brielle Biermann |
| Engaged | February 26, 2024 |
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FAQ’s
What is Billy Seidl’s salary?
Billy Seidl’s salary has not been publicly disclosed. His earnings mainly come from his professional baseball contract and any performance-related bonuses.
How much does Billy Seidl make a year?
The exact amount Billy Seidl earns each year is unknown. His annual income depends on his contract terms and league level.
What is Billy Seidl’s monthly salary?
Billy Seidl’s monthly salary has not been officially released. Estimates vary because his contract details remain private.
Does Billy Seidl earn money outside baseball?
Yes, Billy Seidl may earn additional income through endorsements, sponsorships, or other business opportunities, though these are not publicly confirmed.
Which team pays Billy Seidl’s salary?
Billy Seidl’s salary is paid by the professional baseball organization he is signed with under his current contract.
Final Thought
Billy Seidl’s journey is a reminder that a baseball career, even one that includes a college championship and an MLB draft selection, does not always end on the field. His willingness to pursue a finance degree while still playing professionally, and to pivot decisively once his playing career ended, paints a picture of someone building long term stability rather than chasing a fading dream.
