Who Is Billy Seidl? Bio, Age, Family, Net Worth & Engagement To Brielle Biermann

Billy Seidl, a rising star in American baseball, has been gaining more attention not only for his impressive skills on the mound but also for his relationship with reality TV personality Brielle Biermann. Born and raised in Massachusetts, Billy’s name is quickly becoming familiar to baseball fans and pop culture followers alike. Known for his right-handed power pitching, Seidl has played for Duke University and later signed with the Chicago White Sox, proving that talent and determination go hand in hand. However, his story goes far beyond the diamond. This article explores Billy Seidl’s biography, including his age, family background, education, sports achievements, professional baseball journey, relationship with Brielle Biermann, and net worth in 2025. Whether you know him as a player, a fiancé, or simply a man chasing his dream, this detailed guide offers a full look into his life and what lies ahead.

Profile Summary: Billy Seidl

Early Life and Family Background

Billy Seidl’s Age and Birthplace

Billy Seidl, whose full name is William Randall Seidl, was born on November 9, 1999, in Newton, Massachusetts, USA. As of 2025, he is 25 years old. From a young age, Billy was deeply interested in sports, showing exceptional skills both in baseball and football. His upbringing in Massachusetts played a significant role in shaping his disciplined attitude, teamwork, and competitive drive. The region’s strong athletic culture helped him find his calling early on, particularly in baseball, where his talent soon stood out.

Meet the Seidl Family: Parents and Siblings

Billy comes from a close-knit family that has always valued education, discipline, and sportsmanship. His father, Randy Seidl, and mother, Janet Seidl, have been very supportive of their children’s sports and academic goals. The Seidl family’s dedication to athletics is well-known — in fact, St. Sebastian’s School even named the Seidl Family Baseball Field in their honor. His brother Tommy Seidl is also a talented baseball player who played at Harvard University and later at Alabama, proving that athletic talent truly runs in the family.

Education and Amateur Sports Career

St. Sebastian’s School Achievements

Billy attended St. Sebastian’s School in Needham, Massachusetts, where his academic and athletic excellence shone. He wasn’t just a standout pitcher but also an exceptional student, earning membership in the National Honor Society and maintaining high grades throughout his school years. His talent on the mound was recognized early — during his junior year, Billy achieved a 7-0 pitching record with a 0.58 ERA and 63 strikeouts across 48.1 innings. These outstanding performances earned him the Independent School League (ISL) Most Valuable Player and Most Valuable Pitcher awards in 2018.

Dual-Sport Athlete: Baseball and Football

In addition to baseball, Billy also excelled in football, where he played as a quarterback and earned varsity letters all four years. His leadership and competitiveness on the football field mirrored his energy as a pitcher, showing how versatile and dedicated he was as a student-athlete. This dual-sport experience helped develop his athletic coordination, resilience, and leadership — qualities that later became valuable in his professional career.

College Baseball Career at Duke University

Rise as a Power Pitcher at Duke

After graduating high school, Billy Seidl joined Duke University in Durham, North Carolina, where he became a key player in the Blue Devils’ baseball program. He quickly gained a reputation for his powerful fastball that reached speeds of 92–93 mph, and his wipeout slider, which made him a dangerous competitor. Duke’s head coach Chris Pollard once described him as a player who “pitches like he plays football — with a bulldog mentality.”

Notable College Stats and Achievements

Between 2019 and 2022, Seidl played multiple seasons for Duke, posting a combined 6–5 record, a 6.55 ERA, and 89 strikeouts in 68.2 innings. In 2021, he helped the Blue Devils win their first ACC Baseball Championship since 1961 — a remarkable team achievement that showcased his impact on the roster. His consistent dedication, coupled with his academic focus, made him a well-rounded athlete ready to take the next big leap.

Professional Baseball Career

Draft and Signing with the Chicago White Sox

Billy’s professional journey began when he was selected by the Chicago White Sox in the 15th round (461st overall) of the 2022 MLB June Amateur Draft. Shortly afterward, he signed with the team, receiving a $100,000 signing bonus. His entry into professional baseball was a dream come true and a testament to years of hard work and discipline.

Minor League Stats and Journey

Billy started his pro career with the Arizona Complex League White Sox before moving to the Kannapolis Cannon Ballers, the team’s Class A affiliate. In his time across various minor league teams, he accumulated impressive stats, including 90 game appearances, 10 wins, 7 losses, 113 strikeouts, and a 4.39 ERA with a 1.36 WHIP. These numbers illustrate his ability to adapt to different levels of professional play, competing with some of the most talented young players in the country.

Recent Status and Career Outlook

As of 2025, Seidl was released from the Winston-Salem Dash, a higher-level affiliate of the White Sox organization. While this was a challenging phase, it’s not unusual in the unpredictable world of baseball. Many players, like Seidl, take this opportunity to refine their skills, play in independent leagues, or prepare for a new signing. His strong foundation and passion for the sport suggest that his journey in baseball might be far from over.

Relationship with Brielle Biermann

How Billy Seidl and Brielle Biermann Met

Billy Seidl’s personal life began attracting media attention in 2023 when he went public with his relationship with Brielle Biermann, the daughter of Kim Zolciak from Don’t Be Tardy. They reportedly met during a trip to the Bahamas, and their chemistry was undeniable. Brielle later shared photos of the two together on social media, giving fans a glimpse of their growing bond.

Engagement Details and Proposal Story

On February 27, 2024, just one day after Brielle’s 27th birthday, Billy proposed to her in Scottsdale, Arizona. The heartwarming moment was captured in photos that Brielle shared with the caption, “Forever with you.” He proposed with a stunning solitaire diamond ring, though a temporary ring was used initially due to shipping delays — a charming story Brielle shared on Instagram.

Wedding Plans and Public Appearances

Brielle and Billy haven’t rushed into wedding planning. In fact, Brielle mentioned in interviews and Q&As that she prefers a long engagement to “enjoy every phase of life.” She also expressed that she wants a small, intimate wedding with close family and friends, although Billy’s larger family circle may expand the guest list. Her sister, Ariana Biermann, is set to be the maid of honor, confirming how special this union is for their family.

Billy Seidl Net Worth and Earnings

Estimated Net Worth in 2025

As of 2025, Billy Seidl’s estimated net worth ranges between $100,000 and $250,000. While modest by professional sports standards, it’s important to remember that Seidl is still in the early stages of his career. Most of his income has come from his MLB signing bonus, minor league contracts, and potential endorsement opportunities that may grow with increased fame.

Contract, Salary, and Endorsements

Billy’s signing bonus with the White Sox was approximately $100,000, and his yearly salary during his time in the minor leagues fell within the range typical for entry-level professional players. As his visibility grows, especially through his relationship with Brielle Biermann, opportunities for sponsorships and public appearances are likely to increase — potentially boosting his financial profile over time.

Personal Life and Interests

Off the field, Billy Seidl is a family-oriented individual who often shares moments with his parents and siblings. His social media reflects a humble, grounded personality that values relationships, teamwork, and faith. He is also known to be an animal lover and enjoys spending time outdoors. Fans appreciate his balance between a competitive athlete’s life and a simple, relatable human side.

Future Prospects and Potential

Billy’s future in baseball remains open and full of potential. Whether he returns to the minor leagues, signs with another organization, or transitions into coaching, his foundation as a strong pitcher and disciplined athlete will serve him well. Given his background, education, and determination, Seidl could also explore opportunities in sports training, commentary, or mentorship programs for young athletes. His growing public presence through Brielle Biermann also means that his career may extend beyond sports into lifestyle and media ventures.

Conclusion

In summary, Billy Seidl represents the perfect blend of hard work, family support, and personal growth. At 25 years old, he has already achieved what many athletes dream of — competing professionally in baseball and building a strong personal life with someone who supports his journey. From his childhood in Massachusetts and his academic excellence at St. Sebastian’s to his powerful pitching career at Duke and engagement to Brielle Biermann, his story is both inspiring and relatable.

As fans and followers continue to search for updates on Billy Seidl age, parents, net worth, and career, one thing remains clear: Billy Seidl’s journey is just beginning. His dedication to baseball and his genuine approach to life ensure that his name will continue to shine — on the field and beyond.

FAQs About Billy Seidl

Who is Billy Seidl?
Billy Seidl is an American right-handed baseball pitcher best known for his time at Duke University and his selection by the Chicago White Sox in the 2022 MLB Draft. He is also widely recognized as the fiancé of reality-TV personality Brielle Biermann, daughter of Don’t Be Tardy star Kim Zolciak.

How old is Billy Seidl?
Born on November 9, 1999, in Newton, Massachusetts, Billy Seidl is 25 years old as of 2025. He continues to focus on his athletic development while planning his upcoming wedding with Brielle Biermann.

Who are Billy Seidl’s parents?
Billy’s parents are Randall (“Randy”) Seidl and Janet Seidl of Newton, Massachusetts. Both have been active supporters of their son’s baseball journey and even funded the Seidl Family Baseball Field at St. Sebastian’s School in Needham to honor their children’s athletic contributions.

Does Billy Seidl have any siblings?
Yes. Billy Seidl has three siblings — Tommy, Philip, and Shannon Seidl. His brother Tommy is also a standout athlete who played collegiate baseball at Harvard and later at Alabama, continuing the family’s strong baseball tradition.

What college did Billy Seidl attend?
Billy Seidl attended Duke University in Durham, North Carolina, from 2019 to 2022, where he became one of the program’s key pitchers. He helped the Blue Devils capture the 2021 ACC Baseball Championship — the school’s first since 1961 — and earned praise from head coach Chris Pollard for his bulldog mentality on the mound.

What teams has Billy Seidl played for professionally?
After being drafted by the Chicago White Sox in 2022, Seidl played for the Arizona Complex League White Sox, the Kannapolis Cannon Ballers (Class A), and later the Winston-Salem Dash (High-A). Over 90 minor-league games, he recorded 10 wins, 7 losses, a 4.39 ERA, and 113 strikeouts.

What is Billy Seidl’s net worth in 2025?
As of 2025, Billy Seidl’s estimated net worth ranges between $100,000 and $250,000. His income comes primarily from his signing bonus with the White Sox, minor-league contracts, and early sponsorship potential that could expand alongside his growing public profile.

When did Billy Seidl get engaged to Brielle Biermann?
Billy Seidl proposed to Brielle Biermann on February 27, 2024, just one day after her 27th birthday, in Scottsdale, Arizona. The proposal featured a sparkling solitaire diamond ring and marked one of the most talked-about celebrity engagements of 2024.

What are Billy Seidl and Brielle Biermann’s wedding plans?
The couple has shared that they prefer a long engagement to enjoy each stage of their relationship. Brielle has expressed her wish for a small, family-oriented wedding, with her sister Ariana Biermann serving as maid of honor, though no official wedding date has been set yet.

What is Billy Seidl doing now?
After his release from the Winston-Salem Dash in 2025, Billy Seidl has been exploring opportunities to refine his pitching skills and potentially sign with another MLB organization or join an independent league. Off the field, he remains active on social media, sharing glimpses of his training, travel, and life with Brielle Biermann.

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