Competing on the biggest stage of their lives didn't rattle Momiji Nishiya and Funa Nakayama, two normal teenage girls who just happen to be among the world's best skateboarders.The 13-year-old Nishiya won the inaugural women's street event at the Tokyo Olympics on Monday, becoming Japan's youngest-ever Olympic gold medalist in the process."It wasn't that different from other competitions," she said.The Osaka native was completely in her element at the skate park, with a smile on her face -- even after a rough spill during her second run or when she missed her first attempt in the best tric…READ FULL ARTICLE