Madison Keys is a highly accomplished American professional tennis player with a career-high ranking of world No. 5 in singles, known for her powerful serve and aggressive playing style.
Brilliant Earth partnered with tennis superstar Madison Keys, marking the brand's strategic entry into professional sports with its first athlete brand ambassador. Keys also collaborated with Brilliant Earth's design team to create timeless jewelry pieces reflecting her personal style.
Madison Keys partnered with Johnson & Johnson Vision for ACUVUE Brand Contact Lenses.
Nike has sponsored Madison Keys since she was 14 years old, providing her with clothing and shoes.
Wilson was Keys's racket sponsor until 2024. She helped launch the Wilson Ultra line of rackets in mid-2017 and specifically used the Ultra Tour model.
As of the Australian Open 2025, Madison Keys changed her racket model to Yonex Ezone, with which she won her first major title.
Keys is the first American ambassador for the French water company, Evian.
Keys has endorsed Orangetheory Fitness, a company based in Boca Raton where Keys has been a long-time resident.
Madison Keys was born on February 17, 1995, in Rock Island, Illinois. Her interest in tennis began at four years old after watching Venus Williams play at Wimbledon. This early inspiration led her to begin formal lessons at age seven and compete in tournaments by age nine. At ten, she moved to Florida with her mother and sisters to train at the Evert Tennis Academy, where coaches recognized her athletic talent and powerful strokes. By age 14, Keys turned professional, becoming one of the youngest players to win a WTA Tour-level match, notably defeating then-world No. 2 Serena Williams in a World TeamTennis exhibition. She quickly progressed through the ranks, entering the WTA top 100 in 2013 at age 17.
Keys achieved her first major breakthrough in 2015, reaching the semifinals of the Australian Open. The following year, she made her debut in the WTA top 10, becoming the first American woman to do so since Serena Williams in 1999. A significant career milestone came in 2017 when she was the runner-up at the US Open. Following a period of injury struggles, Keys demonstrated her resilience by winning her first major title at the 2025 Australian Open, where she defeated both the world No. 2, Iga Świątek, and the world No. 1, Aryna Sabalenka, showcasing her ability to perform at the highest level.
Throughout her career, Keys has won ten singles titles and reached at least the quarterfinals of all four Grand Slams. She is noted for her fast serve and powerful forehand, which are central to her aggressive baseliner style of play. Off the court, Keys is actively involved as an ambassador for Kindness Wins, a nonprofit organization dedicated to fighting bullying and promoting kindness. Her long-standing relationships with coaches like Lindsay Davenport and Juan Todero, and currently with her husband Bjorn Fratangelo, have played a role in her professional development and consistent presence in the top tiers of women’s tennis.
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