Team GB have experienced their first medal-free day since day one of the Olympics.
There was disappointment as showjumper Nick Skelton missed out in the individual competition, and the women's hockey team lost their semi-final against Argentina 2-1.
Although they will still compete in a bronze medal match, defeat means they miss out on a guaranteed gong.
Liverpool boxer Tom Stalker, who was aiming to secure at least a bronze, lost his men's light-welterweight quarter-final on points to Munkh-Erdene Uranchimeg of Mongolia.
By the team's high standards it was a lean day, particularly after a rush of golds over recent days.
But still standing third in the medals table with a haul of 22 golds, the best in more than a century, it was a minor blow.
The athletes will hope to get back to winning ways quickly with female boxer Nicola Adams, swimmer Keri-Anne Payne and the men's and women's 470 class sailing teams all starting with high hopes.
Britain's Lawrence Clarke, who was educated at Eton and is a distant relation of former US president Theodore Roosevelt, tonight admitted he was stunned by his "amazing journey" after finishing fourth in the 110m hurdles final.
Clarke, nicknamed "toff of the track" due to his privileged background, set a personal best of 13.31 seconds to reach the final as the eighth fastest qualifier.
The 22-year-old returned to the track two hours later to finish just outside the medals. He said: "I can't believe I came fourth in the Olympic Games. I didn't expect to reach the final."