The Posey Family Of Six: 5 Surprising Facts About Buster Posey's Adopted Twins, Ada And Livvi (2025 Update)

The story of Buster Posey and his wife, Kristen, adopting identical twin girls in July 2020 is one of the most heartwarming and career-defining moments in recent Major League Baseball history. As of late 2025, the Posey family of six is thriving, with the younger twins, Ada and Livvi, now five years old, having completed the family’s long-awaited expansion. This decision—which led to the former San Francisco Giants star opting out of the 2020 season—was not a sudden one, but the culmination of a years-long, often heartbreaking, private adoption journey that few fans truly understand. The depth of their commitment to family over career was clear when Posey forfeited a multi-million-dollar salary to protect his premature, immune-compromised newborns during the COVID-19 pandemic. This bold move provided a rare glimpse into the personal life of the three-time World Series champion, revealing a man whose greatest legacy may ultimately be defined by his role as a devoted husband and father to two sets of twins. The full story of their adoption journey, including the emotional setbacks and the unique circumstances surrounding Ada and Livvi’s birth, is a testament to the family's perseverance and faith.

Buster Posey: A Complete Family & Professional Biography

Gerald "Buster" Dempsey Posey III is one of the most decorated catchers in San Francisco Giants history, but his life post-retirement has been dedicated to his growing family and philanthropic efforts. His journey from baseball superstar to full-time family man provides a powerful narrative for fans and parents alike.

• Full Name: Gerald Dempsey "Buster" Posey III
• Date of Birth: March 27, 1987
• Hometown: Leesburg, Georgia
• Wife: Kristen Posey (née Powell), married in 2009
• Children: Four (Two sets of twins)
  • Biological Twins: Lee Dempsey Posey (Son) and Addison "Addi" Posey (Daughter), born in 2011.
  • Adopted Twins: Ada Posey (Daughter) and Livvi Posey (Daughter), adopted in 2020.
• MLB Career: San Francisco Giants (2009–2021)
• Key Achievements: 3x World Series Champion (2010, 2012, 2014), 2012 NL MVP, 7x MLB All-Star, 2010 NL Rookie of the Year, 2012 NL Comeback Player of the Year, 2016 Gold Glove Award.
• Retirement: Announced in November 2021, citing a desire to spend more time with his family.
• Philanthropy: Co-founder of the BP28 Foundation, which focuses on raising awareness and funds for pediatric cancer research.

The Emotional Journey: Multiple Failed Adoptions Before Ada and Livvi

While the public celebrated the successful adoption of Ada and Livvi, few realized the emotional toll the years-long adoption process had taken on Buster and Kristen. Their desire to expand their family beyond their older twins, Lee and Addison, led them down a difficult path that included significant heartbreak.

The Poseys had been actively trying to adopt for several years, a process that is often characterized by uncertainty and emotional vulnerability.

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The Anguish of Multiple Failed Matches

The most crucial detail that adds depth to their story is the fact that the Poseys experienced multiple "failed matches" before Ada and Livvi were born. In adoption, a failed match occurs when a birth mother chooses a family and then later changes her mind, often after the adoptive family has invested emotionally and financially. This repeated cycle of hope and profound disappointment is a common, yet rarely discussed, anguish of the adoption journey.

This history of setbacks made the finalization of Ada and Livvi’s adoption even more meaningful. The emotional resilience Kristen and Buster demonstrated throughout those years underscores the depth of their desire to bring more children into their home, making their successful adoption a true victory for the entire family.

Why Buster Posey Opted Out of the 2020 MLB Season

The adoption of Ada and Livvi was the direct catalyst for one of the most headline-grabbing decisions of Buster Posey’s career: opting out of the shortened 2020 MLB season. This choice, which meant sacrificing a multi-million-dollar salary, was a clear demonstration of his family-first values and his commitment to his newborn daughters’ health.

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The Premature Birth and NICU Stay

Ada and Livvi were born approximately eight weeks prematurely at 32 weeks gestation, which immediately placed them in a vulnerable health category. As premature infants, they required time in the Neonatal Intensive Care Unit (NICU) and were considered immune-compromised. This was a critical factor in the Poseys’ decision-making process.

The 2020 MLB season was played under strict COVID-19 protocols, but the risk of exposure remained. Buster Posey stated that from a baseball standpoint, it was a tough decision, but from a family standpoint—a decision to protect their children—it was an easy one.

Protecting the Immune-Compromised Newborns

For a father whose newborn daughters were in a fragile state, the risk of traveling, being around large groups, and potentially bringing the virus home was simply too high. Posey’s decision to sit out the season ensured that he was present for his wife and children during a critical time of transition and medical vulnerability. This act was widely praised as a heroic move that cemented his reputation as a man who valued his family above all professional pursuits, even at the peak of his career.

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Life as a Family of Six: The Posey Twins Today (2025 Update)

The Posey household is now a bustling home with two sets of twins, creating a unique and energetic family dynamic. As of late 2025, the younger adopted twins, Ada and Livvi, are five years old, while the older twins, Lee and Addison, are now preteens or young teenagers, a significant age gap that adds to the fun chaos.

Since retiring from baseball in 2021, Buster Posey has embraced his role as a full-time father, citing his desire to be present for his children as they grow up as a major factor in his decision. The family recently moved back to the Bay Area, where Buster has taken on new roles, including joining the San Francisco Giants’ ownership group and pursuing a business degree at the University of Georgia.

The transition to a family of six, with two sets of twins, presents unique challenges and rewards. The older twins, Lee and Addison, have taken on the role of older siblings, helping to nurture and care for their younger sisters. This blend of biological and adopted children, all close in age, has created a beautiful, extended family unit.

The BP28 Foundation’s Continued Legacy

While the family’s personal story is focused on adoption, their philanthropic work through the BP28 Foundation remains dedicated to pediatric cancer. Buster and Kristen established the foundation in 2016 to support children battling cancer and their families, hosting major events to raise funds and awareness. This commitment to helping other families facing medical challenges shows that their family values extend far beyond their own home.

The Posey’s journey—from the anguish of failed adoptions to the joy of welcoming Ada and Livvi, and the ultimate sacrifice of a baseball season—is a powerful narrative of love, resilience, and the enduring value of family.