Some of these phenoms are already on our list of the 50 most dominant athletes alive. Others, if everything works out, could be in the next few years. While sports history is of full of examples of athletes that fail to live up to the hype, there are also stars like LeBron James, Tiger Woods, and the Williams sisters who actually met their astronomical expectations.Giannis Antetokounmpo, Milwaukee Bucks player (age 20) The so-called "Greek Freak" was better in 2014-15 than anyone in the NBA expected. He has the height of a center, the skills of a guard, and an unreal 7'4" wingspan. His potential is off the charts. He has been compared to everyone from Kevin Durant to Kevin Garnett. He has more raw physical talent than anyone else his age, and if he continues to develop, he could rule the NBA with Anthony Davis once the LeBron era comes to an end. Martin Odegaard, Real Madrid player (age 16) Odegaard, a Norwegian prodigy who burst onto the scene at age 15, had every big team in Europe clamoring for his services in January of 2015. Soccer is full of examples of young players who fail to live up to the hype. Will Odegaard be different? It's promising that he started Norway's most recent European Championship qualifier, and he bypassed the typically club progression and jumped straight to Madrid. Simone Biles, US gymnast (age 18) If there's one person you'd bet on being a star at the 2016 Rio Olympics, it's Biles. Biles has been the most dominant force in women's gymnastics in the last two years. She won four golds at the last World Championships and the gold in the all-around competition in both 2013 and 2014. She's better than breakout star Gabby Douglas was when going into the London Olympics, and has a chance to take home a boatload of medals. See the rest of the story at Business Insider