Great Britain's women were beaten in straight sets by Russia in their first Olympic volleyball match.
Russian Prime Minister Dmitry Medvedev was in the 15,000-strong crowd at Earls Court to cheer his country to a 25-19 25-10 25-16 victory.
GB coach Audrey Cooper said she saw enough positives to suggest her players can recover against Algeria on Monday.
"The girls performed very well and we now look forward to the next match," said Cooper.
Elsewhere in Pool A, Japan faced few problems in overcoming Algeria 25-15 25-14 25-7, while the Dominican Republic came from a set down to level against Italy before losing 25-17 23-25 25-19 25-15.
Defending champions Brazil were pushed all the way by Olympic debutants Turkey before sealing victory in a gripping Pool B game which ended in the early hours of Sunday morning.
Turkey lost the first and third sets but forced a fifth-set decider.
But after an epic battle lasting two hours and nine minutes, the South Americans claimed victory at 00:52 BST.
Earlier, China came from behind to defeat Serbia 16-25 25-18 25-13 25-12, while losing 2008 Olympic finalists the United States recorded a 25-19 25-17 20-25 25-21 win over South Korea.