Bethanie Mattek-Sands is an American professional tennis player. She has won nine Grand Slam titles (five in women's doubles and four in mixed doubles), an Olympic gold medal, and is a former world's number one in doubles. Often referred to as "America's Tennis Rock Star" for her colorful apparel and hair, and signature knee-high socks, Mattek-Sands is also an advocate for various charitable causes and has used her platform to promote inclusivity and body positivity in sports. When not traveling for competitions, Bethanie lives in Arizona.