bethany maddox sands and jack sock denied venus williams her fifth olympic gold. partner. >> fun to watch there, chris. >> what are we looking forward to later? >> don't you love venus' hair, she has the colors going on. >> always patriotic. you're also watching what is happening later. what are we looking forward to? >> the matchup between usain bolt and american justin gatlin is the hottest ticket in town, the rivalry is hot. bolt, who has won the last two olympics in the 100 meters calls the 34-year-old an old man, he mocks his gray hair. gatlin, who has the fastest time in the 100 this year and also had the fastest time in the prelims shoots back, i'm feeling hungry. game on for the title of the world's fastest man. he did win all three in 2008, and 2012. his mom, though, wants the 29-year-old to just finish the olympics, get married and give her a grandchild. but first things first and that's tonight. >> first things first. much success to all who are running there. thank you very much. chris jansing in rio de janeiro. thank you, chris. watch coverage of the