We have our Muhammad Alis, our Michael Jordans, our LeBron Jameses, even our Venus Williamses. But there’s only one who can call herself Serena Williams. Until recently, both Williams Sisters were often neglected from the conversation of being the singular greatest athlete to ever exist. This may be due to the fact that they are women, who happen to compete in a sport that’s often perceived as boring or not as widespread like football, soccer, or basketball. The problem with this outlook is, just as Michael Jordan has done for basketball or Ali for boxing, both sisters reinvented the game of tennis as more of a thrilling spectator sport for the betterment of pop culture. With her charisma and nearly consistent domination, Serena happened to even pull ahead of her sister.