Sky Brown, a 13-year-old from Britain, during park skateboard qualifications.Credit...Chang W. Lee/The New York Times Aug. 3, 2021 Kokona Hiraki of Japan, 12, and Sky Brown of Britain, 13, won the silver and bronze medals in the park skateboard competition on Wednesday. Because they didn’t win, they failed to claim the title of youngest-ever Olympic gold medalist. Not that we really know who that is. The current accepted youngest gold medalist is Marjorie Gestring, a 13-year-old American diver who won the springboard competition in 1936. Her record was threatened by Momiji Nishiya of Japan, a 13-year-old who won the street skateboard competition last week. But Nishiya was about two months older than Gestring was at the time of her gold.