Few athletes have shaped sports and society the way Billie Jean King has. With 39 Grand Slam titles to her name and a defining victory in the 1973 Battle of the Sexes, she changed tennis forever—and her personal life, including her marriage to Ilana Kloss, remains a source of inspiration.
Born: November 22, 1943 ·
Grand Slam Titles: 39 ·
Spouse: Ilana Kloss (m. 2018) ·
Wimbledon Singles Titles: 6 ·
Historic Match: Battle of the Sexes (1973)
Quick snapshot
Six key facts about Billie Jean King, one pattern: a life of firsts.
The table below captures her essential biographical and career milestones.
| Label | Value |
|---|---|
| Full Name | Billie Jean King (née Moffitt) (Wikipedia) |
| Born | November 22, 1943, Long Beach, California, USA (Wikipedia) |
| Spouse | Ilana Kloss (m. 2018) (People) |
| Grand Slam Singles Titles | 12 (Wikipedia) |
| Grand Slam Doubles Titles | 16 women’s, 11 mixed (Wikipedia) |
| Career Prize Money | Over $2 million (pre-open era) (Wikipedia) |
The pattern: King’s biography is defined by relentless firsts—first female athlete to earn over $100,000 in a season, first woman to defeat a man in a televised tennis match, and a pioneer whose personal milestones matched her professional ones.
Does Billie Jean King have a wife now?
Who is Ilana Kloss?
- Ilana Kloss is a South African former professional tennis player, coach, and administrator (Wikipedia).
- Born March 22, 1956 (Wikipedia), she reached a career-high singles ranking of No. 19 in 1979 and was ranked No. 1 in doubles in 1976 (USTA).
- She won two Grand Slam titles in 1976: the US Open women’s doubles and the French Open mixed doubles (USTA).
When did Billie Jean King and Ilana Kloss marry?
King and Kloss were married in a secret ceremony on October 18, 2018 (People). They had been together for decades after meeting in 1966 in Johannesburg, where Kloss was a ball girl (People).
King’s marriage to Kloss reflects a personal life that parallels her public advocacy: both women have built a life around sports and equality.
Was Billie Jean King LGBTQ?
How did Billie Jean King come out?
- King was publicly outed as a lesbian in 1981 when a former partner filed a palimony lawsuit (Wikipedia).
- Rather than retreat, she chose to embrace her identity and became a vocal advocate for LGBTQ rights (USTA).
What is the significance of her coming out?
King’s openness at a time when few public figures were out gave courage to countless LGBTQ athletes and fans. She later stated, “I didn’t choose to be gay. I was born that way” (The Guardian).
King’s willingness to live openly, despite professional risk, helped pave the way for the next generation of LGBTQ athletes in tennis and beyond.
The implication: her coming-out story is not just personal—it reshaped the cultural landscape for sports figures worldwide.
Did Billie Jean King have a child?
Does Billie Jean King have biological children?
No. Billie Jean King has stated that she does not have biological children (People).
Does she have stepchildren?
King has no stepchildren from her relationships. Her marriage to Ilana Kloss is a child-free partnership (People).
While King has no children, her legacy lives on through the millions of young players inspired by her foundation and the Billie Jean King Cup.
What this means: King’s impact flows through institutions, not inheritance—a fitting legacy for a woman who built the WTA from scratch.
Why is Billie Jean King so famous?
What are Billie Jean King’s greatest tennis achievements?
- Won 39 Grand Slam titles: 12 in singles, 16 in women’s doubles, and 11 in mixed doubles (Wikipedia).
- Won six Wimbledon singles titles (1966, 1967, 1968, 1972, 1973, 1975) (Wimbledon).
What was the Battle of the Sexes?
In 1973, King defeated Bobby Riggs in a nationally televised match watched by an estimated 90 million viewers worldwide (Wikipedia). The victory was a landmark moment for women’s sports and gender equality.
How did she advocate for women’s tennis?
- Founded the Women’s Tennis Association (WTA) in 1973 (WTA).
- Campaign for equal prize money at the US Open, which was achieved in 1973 (USTA).
- Awarded the Presidential Medal of Freedom in 2009 (The White House).
The pattern: King turned every victory—on and off court—into a lever for systemic change.
What is the age difference between Billie Jean King and her wife?
How old is Billie Jean King?
Born November 22, 1943 (Wikipedia).
How old is Ilana Kloss?
Born March 22, 1956 (Wikipedia).
- The age difference is 12 years and 4 months, with King being older.
The age gap is modest by celebrity standards and has never been a notable issue in their relationship.
The catch: while age gaps often attract scrutiny, their decades-long partnership speaks to compatibility beyond birth years.
Timeline: Billie Jean King’s life and career
- 1943: Born in Long Beach, California (Wikipedia).
- 1961: Wins Wimbledon women’s doubles title at age 17 (Wimbledon).
- 1966: First Wimbledon singles title (Wimbledon).
- 1971: First woman to win over $100,000 in prize money in a season (Wikipedia).
- 1973: Defeats Bobby Riggs in the Battle of the Sexes; founds the WTA (Wikipedia).
- 1981: Publicly outed as lesbian; becomes advocate for LGBTQ rights (Wikipedia).
- 2009: Awarded Presidential Medal of Freedom (The White House).
- 2018: Marries Ilana Kloss (People).
The pattern: each decade brought a new milestone—athletic, political, or personal—demonstrating King’s ability to evolve without losing her core mission.
Clarity: What we know, what we don’t
Confirmed facts
- Billie Jean King has a wife, Ilana Kloss.
- She is LGBTQ (lesbian).
- She has no biological children.
- Age difference between King and Kloss is 12 years 4 months.
- She won 39 Grand Slam titles.
What’s unclear
- Exact net worth is not publicly confirmed; estimates vary.
In her words
“You have to believe in yourself when no one else does.”
— Billie Jean King, The Guardian
“We are partners in every sense.”
— Ilana Kloss, quoted in People
The pattern across their lives: both women used tennis as a platform to champion equality, and their partnership has amplified that mission.
Summary: The fight continues
Billie Jean King’s story is far from over. At 80, she and Kloss remain active in sports ownership and advocacy, proving that the battle for gender and LGBTQ equality is a long game. For future generations, the choice is clear: continue the fight, or risk losing the ground King has already won.
King’s life demands a single consequence from those who follow: build on what she started, or see the progress unravel.
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Her impact both on and off the court is explored further in an article about Billie Jean Kings ongoing activism.
Frequently asked questions
What is the Billie Jean King Cup?
The Billie Jean King Cup (formerly Fed Cup) is the world’s largest annual international team competition in women’s tennis, named after King in 2020.
How many Grand Slams did Billie Jean King win?
She won 39 Grand Slam titles: 12 singles, 16 women’s doubles, and 11 mixed doubles.
Who did Billie Jean King marry?
She married Ilana Kloss in 2018.
What was the Battle of the Sexes?
A 1973 tennis match where King defeated Bobby Riggs, becoming a symbol of women’s equality in sports.
Is Billie Jean King still alive?
Yes, she is alive and active in advocacy and sports business.
What is Billie Jean King’s net worth?
Exact net worth is not publicly confirmed; estimates vary widely.
Why is Billie Jean King called a feminist icon?
She founded the WTA, fought for equal prize money, and won the Battle of the Sexes, all advancing women’s rights in sports.
James Mitchell is Editor-in-Chief at Australian Insight, overseeing editorial standards, publication decisions and corrections.