Sports fans are always debating who deserves the title of GOAT — or Greatest Of All Time. Athletes like LeBron James and Sue Bird, who have both won four championship titles, are undoubtedly two of the greatest basketball players of all time. Meanwhile, in boxing, icon Muhammad Ali has been dubbed “The Greatest.” Although the internet will certainly try, it’s difficult to compare athletes across sports and land on a single GOAT. But, if we had to land on someone, it might just be tennis icon Serena Williams.