Shooter Kimberly Rhode set American Olympic history as she won gold in the women's skeet.
The 33-year-old set a new Olympic record in qualifying, with 74 hits out of 75, and went on to equal her own world record with a perfect 25 in the final for a total of 99 in front of a packed shotgun range at the Royal Artillery Barracks.
It means Rhode is the first American to win an individual sport medal at five consecutive Olympic Games. She is a two-time gold medallist in the double trap event, in 1996 and 2004, either side of bronze in 2000, and won silver in the skeet at Beijing four years ago.
Guo Wenjun won China's second shooting gold medal in dramatic fashion in the women's 10m air pistol.
Celine Goberville of France looked on course to spring a surprise and dethrone the reigning Olympic champion as she led going into the final shot but her last effort was wayward, scoring a lowly 8.8 leaving Guo to nail a near-perfect 10.8 to keep her title.
North Korea's An Kum Ae won judo gold with a sudden-death victory over Cuban Yanet Bermoy Acosta in the women's under-52kgs final, while Lashas Shavdatuashvili claimed the men's under-66kgs gold for Georgia with a narrow win over Hungarian Miklos Ungvari.
China's Wu Minxia secured her place in Olympic history with a hat-trick of women's springboard synchro titles alongside He Zi at the opening diving event at the Aquatics Centre.
Kazakhstan's Zulfiya Chinshanlo won weightlifting gold in the women's 53kg on Sunday afternoon, setting new Olympic and world records in the process. With organising committee chairman Sebastian Coe watching on, Chinshanlo lifted 131kg in the clean and jerk - a new Olympic and world best - to set a total 226kg - another Olympic record.
Om Yun Chol of North Korea won gold in the men's 56kg weightlifting competition.
South Korea maintained their remarkable record in women's team archery, winning a seventh consecutive Olympic gold at Lord's, while Hungary's Aron Szilagyi defeated Italian Diego Occhiuzzi 15-8 to claim gold in the individual men's sabre.