No surprise here — Serena was a total boss this year. In addition to making her daughter, Alexis, the youngest professional team owner in sports, Serena joined forces with other stars, athletes, and activists to start their own women's football team in LA. She also broke the US Open match wins record with her 102nd career victory at the Grand Slam in September. Off the court, Serena made some power moves, which included starring in Stuart Weitzman's winter campaign and donating around four million face masks to schools throughout the US.