teamu sa is heading home with the most medals. ben tracy is covering the games for us in rio. >> reporter: it was go women's basketball team. they dominated spain and kept teamu sa's 20 year long winning streak alive. as expected, the men's basketball team won its own gold today fok knocking off serbian. american shocker stevenson,-- shakur steven sorn punched his way to silver in ban tamweight boxing. but the only competition that seemed to matter in rio this weekend was soccer. the host country beat germany it pride after a humiliating loss in the 2014 world cup. now all that's left is the closing ceremony. four-time gold medalist simone biles will carry the flag for teamu sa. >> i'm very honored that they got to select me but one of my biggest worries is i'm afraid the flag is tbing to be too heavy for me. i'm a little short, so i'm worried about that but i think they will guide me through it. >> biles was selected by teammates and will be the t at the closing ceremony. once the torch is out here in rio, all the focus will go t

. >> reporter: teamu sa dominated the pool at the 2016 rio olympic games including winning gold in the 400 medley relay. it was an emotional win for michael phelps who says this will be his last olympics. having collected 23 gold medals, three silvers and two bronzes. today phelps addressed reporters. >> this is what i wanted to finish cherry i wanted to put on top of the cake. this is it i said it before, but you guys can say, this is the last time. >> reporter: gymnast simone biles captured gold again sunday in the women's vault final. there were incredible twists and spins but she did not perform the so called vault of death. the dangerous front handspring followed by roughly two and a half somersaults will only be attempted by india's dipa karmakar and oksana chusovitina of uzbekistan tonight. kyla ross. >> that is why gymnasts are in the sport, they want to see how far they can take themselves, and to achieve something that someone maybe has never done before or something different. so i think that's just the nature of the competition. >> reporter: with swimming competition over,