1. Kelvin Gastelum
https://www.youtube.com/watch?v=FUKFn4P5oPg An unlikely Ultimate Fighter winner, Gastelum has advanced from a top heavy grappler to a very well rounded fighter. Despite his prior reliance on his wrestling, Gastelum's striking has become very sharp and is continuing to improve with every training camp. Gastelum has amassed a 6-2 record in the UFC so far with impressive victories over tough opponents such as Rick Story, Nicholas Musoke and Nate Marquardt. It truly is hard to believe that he's only 23 years old, mainly due to the amount of fights he's had in the UFC, how well rounded he is and his current ranking. Often likened to a young Cain Velasqeuz, there can be no doubt that Gastelum has the potential to be a tile contender in the coming years. A move to Velasquez' camp American Kickboxing Academy would be extremely interesting. Who do you rank as the best young UFC prospects? Share your picks below in the comments thread.