BEIJING -- A total of 37 world records had been broken at the Beijing Olympic Games by August 21, organizers said on Friday.

Usain Bolt of Jamaica points at his race time after winning the men's 100m final of the athletics competition in the National Stadium at the Beijing 2008 Olympic Games August 16, 2008. Bolt won 100 metres gold at the Beijing Olympics in a world record time on Saturday, running 9.69 seconds to claim victory in an exhilarating showdown with his compatriot Asafa Powell. [Agencies]

Liu Wenbin, deputy director of Sports Department of the Beijing Organizing Committee of the 29th Olympic Games (BOCOG), said at a press conference at the Main Press Center that by August 21, the Olympics had seen 37 world records and 77 Olympic marks shattered.

Liu said 80 delegations had made it to the medal standings and amomg them, 50 had struck gold.

Li added 237 golds, 238 silvers and 273 bronzes had been awarded.

Combination of eight pictures done on August 17, 2008 showing Michael Phelps of the US displaying the eight gold medals he won at the swimming events during the 2008 Beijing Olympic Games. From L to R, top row: men's 4 x 100m medley on August 17, 100m butterfly on August 16, men's 200m individual medley on August 15, men's 4 x 200m freestyle relay on August 13. From L to R, bottom row: men's 200m butterfly on August 13, men's 200m freestyle on August 12, men's 4X100m freestyle relay on August 11, men's 400m individual medley on August 10.[Agencies]

Anti-doping is also going smoothly during the Games, said International Olympic Committee spokeswoman Giselle Davies at the same conference.

Davis announced that 4,620 doping tests had been done, of which 3,681 were urine tests and 939 were blood.

Wang Wei, executive vice president and secretary general of BOCOG, said up to this Friday, 408,271 tickets for the Paralympics had been sold, with 30,418 tickets sold on Thursday alone.