Noah Lyles knows how to back up his talk.The 27-year-old sprinter became the first American to win gold in the men's 100-meter since Justin Gatlin did so in 2004.Lyles took home the victory in an epic photo finish in which he won by five-thousandths of a second. It was his first Olympic gold.CLICK HERE FOR MORE SPORTS COVERAGE ON FOXNEWS.COMLyles is best known for his colorful personality and one who wears his emotions on his sleeve; before the opening ceremony, he wrote "ICON" on his nails (again talking the talk and walking the walk).But what most people don't know is