When it comes to larger-than-life legends, few can match the sheer charisma of Muhammad Ali. Dubbed "The Greatest," Ali wasn't just a boxer—he was a cultural phenomenon whose pre-fight poetry and bold predictions revolutionized sports entertainment. His 56-5 professional record, including 37 knockouts, speaks for itself, but his influence extends far beyond the ring. From his iconic "float like a butterfly, sting like a bee" mantra to paving the way for wrestling promos, Ali set a standard that athletes still chase today.

But the debate doesn't stop in the squared circle. Motorsports has its own pantheon of heroes, with nicknames as legendary as their feats. NASCAR fans revere "The King" Richard Petty and "The Intimidator" Dale Earnhardt, while daredevil Evel Knievel turned stunt jumping into a national obsession. These athletes didn't just compete—they captivated audiences with raw grit and showmanship that defined American sports.

Now, USA TODAY Sports is asking you to settle the score. As they honor the greatest American athletes of all time, it's your turn to vote for your motorsports and combat sports icons. Who deserves the GOAT title? Is it Ali's unmatched bravado, or does a racing legend or a fearless stuntman take the crown?

Mark your calendars for May 21, when experts reveal their top picks. Until then, dive into the poll below to cast your vote, suggest a sleeper pick, or call out the biggest snub. And don't forget—each athlete's journey started somewhere, whether it's a hometown or a high school gym. Let the debate begin!