( CNN ) -- Gymnastics once again takes center -- or is it centre ? -- stage Thursday when the women compete in the individual all-around . Here 's what to look for in that and other top events : . 1 ) Gymnastics : A new queen . With world champion Jordyn Wieber excluded from the women 's individual all-around competition because she finished fourth , but third among Americans , in a qualifying system that allows only two people per nation , the United States still has the favorite for gold . Gabby Douglas led the Americans to the team title when she finished second in the vault , third on the floor , fourth on the balance beam and sixth on the uneven bars . Viktoria Komova of Russia was the top scorer in the qualifying round . They will be matched against each other in first rotation along with Aly Raisman of the United States and Aliya Mustafina of Russia . Catching drug cheats at the Games . The individual all-around starts at 4:30 p.m. London time ( 11:30 a.m . ET ) 2 ) Swimming : The second big showdown . Michael Phelps , the most famous U.S. swimmer ever , will be in Lane 3 . Ryan Lochte , who was supposed to be one of the big winners in these Games , will be in Lane 4 . It 's the Showdown , part II . On Saturday , Lochte won the first head-to-head meeting between the two stars , though Phelps did n't even medal in the 400-meter individual medley . But Lochte also swims in the 200-meter backstroke final just a half hour before the 200-meter individual medley . Should Phelps win the event , he would be first male swimmer to accomplish the feat in three consecutive Olympics . Phelps cements legacy . The 200-meter individual medley final starts at 8:19 p.m. London time ( 3:19 p.m . ET ) 3 ) Equestrian : Ann Romney 's horse set to take part in the Games . Ann Romney , wife of the soon-to-be Republican nominee , will be on hand to see her horse Rafalca compete in dressage . Mitt Romney will be traveling from Boston to Colorado for campaign events . Commentators seem to think the Republican candidate has a better chance in his race than Rafalca , ridden by Jan Ebeling , has in her event . Photos : Day 5 at the Olympics . The individual dressage competition starts at 11 a.m. London time ( 6 a.m . ET ) while Ebeling is scheduled to ride Rafalca about an hour later . 4 ) Volleyball : Battle of unbeatens . Men 's world No.1 Brazil will face the United States in a rematch of the Beijing Games final , which the U.S. won in a thrilling four sets . Each side has won its first two matches without losing a set . The match takes place at 8 p.m. London time ( 3 p.m . ET ) 5 ) Table Tennis : They do n't play to lose . While controversy may have hit the badminton courts , table tennis has rolled on . But world champ Zhang Jike has not been without his own controversy in the past . In 2004 he was bumped from the Chinese national team for violating team rules . He came back with a new attitude and now has a chance to become the fourth male grand slam winner . He plays Dimitrij Ovtcharov of Germany in one semifinal while countryman Wang Hao plays Chuang Chih-Yuan of Taiwan . The winners meet later in the day for the gold medal . Badminton player quits . Table tennis semifinals begin at 10 a.m. London time ( 5 a.m . ET ) .
No.1 Brazil , Russian gymnasts compete for individual title . More swimming , highlighted by Michael Phelps vs. Ryan Lochte two more time . Dressage competition has a U.S. political connection . Russian look for more medals in table tennis semis , final .