>> diaz: this is the final weekend of competition at the tokyo olympics. today, allyson felix won her record-setting 11th career olympic medal with a gold in the women's 4 x 400 relay. team u.s.a. now has more than 100 medals. china is second with 87, but still holds the most gold. cbs' jamie yuccas is in tokyo. >> reporter: it's a three-peat for the women's water polo team. team u.s.a. beat spain to win the gold. they're the only team to medal in every olympics since water polo was introduced in 2000. we spoke to goalkeeper ashleigh johnson before she left for tokyo about what her presence means for the sport. >> representation is everything. if you can't see yourself at the highest level in your sport, achieving whatever goal you want to achieve, how can you visualize yourself getting there? >> reporter: and now? people can envision an african american olympic gold medal winner in water polo. >> yes, exactly!