DAY NINE IN A NUTSHELL
Rapid: An evening for the Brits to take a back seat and pay homage to the fastest 100 metre runner the Olympics have seen. Unlike Beijing, Usain Bolt had to dig deep this time. His 9.63 was not a world record, but it was enough to win the fastest final ever. Tyson Gay clocked 9.80 and missed out on the medals. Every finisher broke 10 seconds bar Asafa Powell, who broke down injured. This was the greatest spectacle in sport.
LEADING BRITS IN ACTION
Ben Ainslie sailed a masterful final race in the Finn, beating Jonas Hogh-Christensen to win his fourth consecutive sailing gold.
Iain Percy and Andrew Simpson were overhauled by the Swedish team of Fredrik Loof and Max Salminen in the final Star race and had to settle for silver medals.
Andy Murray produced one of the finest performances of his career to demolish Roger Federer 6-2 6-1 6-4 and take gold in the men's singles tennis.
Murray came agonisingly close to adding a second gold medal, but he and Laura Robson lost to Max Mirnyi and Victoria Azarenka, losing in a champions' tie-break 2-6 6-3 10-8 to take silver.
Louis Smith and Max Whitlock claimed two more gymnastics medals, claiming silver and bronze in the men's pommel horse behind Hungary's Krisztian Berki.
Freya Murray came 44th and Clare Hallissey 57th in the women's marathon. Mara Yamauchi dropped out before the 10km mark.
Sailing intermediate positions: Women's 470 - 1st, Nick Dempsey (RS:X) - 2nd, Men's 49er - 3rd.
Ed Clancy took bronze in the men's omnium as Denmark's Lasse Hansen won the competition.
Jason Kenny cruised into the quarter-finals of the men's track cycling sprint.
Victoria Pendleton set a new Olympic record en route to the track cycling sprint quarter-finals.
Christine Ohuruogu won a silver medal in the women's 400m, producing a late surge to finish behind Sanya Richards-Ross.
Perri Shakes-Drayton and Eilidh Child made it safely through to the women's 400 metres hurdles semi-finals.
Dwain Chambers, Adam Gemili and James Dasaolu all missed out on a place in the men's 100 metres final.
Martin Rooney, Conrad Williams and Nigel Levine failed to qualify for the men's 400m final. Ross Murray and Andy Baddeley did not qualify for the men's 1500m final.
Robbie Grabarz qualified for the high jump final. Yamile Aldama finished fifth in the women's triple jump. Alexander Smith finished 12th in the hammer.
Luke Campbell won his bantamweight boxing quarter-final 16-15 against Detelin Dalakiev. Natasha Jonas made a superb start to her lightweight campaign, upsetting American pugilist Queen Underwood 21-13.
Great Britain's men's hockey team produced a stirring comeback from three oals down to draw 3-3 with Australia. The two nations remain in the top positions in Group A.
THE GREATEST (SAILOR) EVER?
Ben Ainslie's four consecutive gold (fifth consecutive medal) not only strengthens his credentials as the greatest sailor of all-time, he might just be Britain's greatest Olympian. In his favour - the massive element of unpredictability that makes sailing gold so hard to come by even if you are the best sailor in the field. Unsung hero: his boat Rita, who he has used for nine years.
BLADE RUNNER BOWS OUT
Opinion is divided on whether Oscar Pistorius should be allowed to compete, but few can deny the South African double amputee is an absolute marvel. He finished last in his 400m semi-final clocking 46.54, over a second slower than he managed in the first round.
Andy Murray. Even if he never wins a Grand Slam, the Scot will always have London 2012. His blistering demolition of Roger Federer landed him a gold medal and made a nonsense of claims he cannot produce against the very best. Throw in a surprise silver in the mixed doubles and it all adds up to a pretty good day.
Kazakhstan have six medals. All of them are gold. In unrelated news, Kazakh gold medallists receive a $250,000 bonus.
In contrast, look at Russia. Picked up a respectable seven medals today, but only one gold. That has been a recurring problem for the Russians, who languish ninth in the table with 35 medals and only four golds. On medal count, they are fourth.
3000m steeplchase gold medallist Ezekiel Kemboi - veered across to lane eight at the finish, danced, did an Usain Bolt, then leapt into the arms of silver medallist Mahiedine Mekhissi-Benabbad. He did all of this with 'Word Up' hair. Amazing.
NAME OF THE DAY
Athlete who tripped and fell in the women's 400m hurdles - Vania Stambolova.
IMAGE OF THE DAY
GOLD MEDALS AWARDED TODAY
Shooting - Men's 50m Free Pistol (60 Shots) - Jongoh Jin (KOR)
Badminton - Men's Singles - Lin Dan (CHN)
Badminton - Men's Doubles - Cai/Fu (CHN)
Sailing - Men's Star - Keelboat - Loof/Salminen (SWE)
Sailing - Men's Finn - Heavyweight Dinghy - Ben Ainslie (GBR)
Tennis - Men's Singles - Andy Murray (GBR)
Tennis - Women's Doubles - Williams/Williams (USA)
Tennis - Mixed Doubles - Max Mirnyi/Victoria Azarenka (BLR)
Gymnastics - Women's Vault - Sandra Raluca Izbasa (ROU)
Gymnastics - Men's Floor Exercise - Kai Zou (CHN)
Gymnastics - Men's Pommel Horse - Krisztian Berki (HUN)
Weightlifting - Women's +75kg - Lulu Zhou (CHN)
Cycling - Men's Omnium - Lasse Hansen (DEN)
Wrestling - Men's 55kg Greco-Roman - Hamid Mohammad Soryan Reihanpour (IRI)
Wrestling - Men's 74kg Greco-Roman - Roman Vlasov (RUS)
Diving - Women's 3m Springboard - Wu Minxia (CHN)
Fencing - Men's Team Foil - Italy
Athletics - Women's Marathon - Tiki Gelana (ETH)
Athletics - Women's Triple Jump - Olga Rypakova (KAZ)
Athletics - Men's Hammer Throw - Krisztian Pars (HUN)
Athletics - Women's 400m - Sanya Richards-Ross (USA)
Athletics - Men's 3000m Steeplechase - Ezekiel Kemboi (KEN)
Athletics - Men's 100m -Usain Bolt (JAM)
- - -
Alex Chick will be writing from London 2012 throughout the Olympic Games.