Oksana Masters, a Ukrainian-born Louisville native, is now an 8-time Paralympic gold medalist.Masters, 35, defended her gold medal title in the women's H4-5 Para Cycling Individual Time Trial Wednesday. She finished with a time of 23:45.2 ahead of Chantal Haenen from the Netherlands by 6.24 seconds. The win also makes her an 18-time Paralympic medalist across four different sports.The USA now holds 57 medals, behind Great Britain at 67 and China with 120.Masters carried the torch during this year's opening ceremony.She was born in Ukraine, and due to radiation effects from Chernobyl, she was born with significant birth defects. She ultimately had both of her legs amputated following her adoption by American Dr. Gay Masters.She moved to Louisville when she was 13, and attended Atherton High School.