The continental games for more than half the world's population was hit with its third doping announcement in as many days Monday when weightlifter No. 4 failed a doping test. This time, it was a silver medalist - Oo Mya Sanda of Myanmar - who was suspended and forced to return her medal.

At the Athens Olympics in 2004, 22 athletes tested positive for banned substances or for violating anti-doping regulations. Four years earlier, 11 athletes tested positive for drugs -- the most since 12 at the 1984 Los Angeles Olympics - and six athletes were stripped of medals, including three gold winners.

Officials here in Doha hope things don't get that bad. But although there are only four days left of competition, the results showing so far are only from the first five days of testing.

Stay tuned - the Olympic Council of Asia, which has made the doping announcements the past three days, has scheduled another "briefing" for 1 p.m. (1000GMT) Tuesday. The announcement for the briefing was handwritten on a whiteboard outside the news conference venue.

Sanda, who competed in the 75-kilogram class, tested positive for a banned metabolite of an anabolic agent. She waived her right to have her second, or B sample, analyzed, said OCA director-general Husain Al Musallam.

The bronze medalist took the silver, and Sinita Darmariani of Indonesia, who originally finished fourth, is now the owner of a bronze.

Al Musallam defended the number of positive tests so far at Doha, saying its anti-doping regime was a big improvement on previous games.

"At the (2002) Busan Asian Games ... there were less than 1,000 total tests, and the number of positive doping cases was 10," he said. About 800 of a planned 1,200 doping tests have been conducted so far in Doha.

On Sunday, two Uzbekistan weightlifters tested positive for banned substances and were disqualified.

Than Kyi Kyi, a female weightlifter in the 48-kilogram class from Myanmar, tested positive for a banned diuretic and was disqualified in the first doping announcement made Saturday.

Trying to take some of the negative gloss off the day was world record holder Liu Xiang, who qualified easily for Tuesday's final of the 110-meter hurdles.

Liu won his heat in 13.74 seconds - 0.86 slower than his world mark. In the faster second heat, Masato Naito of Japan was first in 13.70 and Shi Dongpeng of China second in 13.71.

Yusuf Saad Kamel made it a 1-2 for Bahrain in the men's and women's 800 meters when he took gold in the men's event. The 25-year-old Kamel won in a time of 1:45.74.

Kuwait's Mohammad Al Azemi got the silver while Ehsan Mohajershojaei from Iran took bronze. Maryam Yusuf Jamal of Bahrain won the women's 800 on Saturday.

South Korean golfers felt right at home at the Doha Golf Club. Kim Kyung-tae and Ryu So-yeon won individual honors and led the men's and women's teams, respectively, to gold medals on the same course that will host the Qatar Masters on the European and Asian pro tours at the end of January.

The golfing success helped South Korea edge past Japan and into second place in the gold medal race with 44 compared with Japan's 43. China was still the runaway leader with 124 gold medals and edging closer to its 150 from Busan in 2002.

Elsewhere, Japan beat South Korea 27-26 in the gold medal final in the seven-a-side rugby competition and -- Xue Chen and Zhang Xi continued China's domination in beach volleyball, beating the Japanese pair of Shinako Tanaka and Eiko Koizumi 19-21, 21-11, 15-13.

Earlier in the all-Chinese men's final, Zhou Sun and Li Jian beat Wu Penggen and Xu Linyin 22-20, 12-21, 15-13.

On Monday, Qatar Olympic officials reiterated their plans to bid for the Summer Olympics.

Shiekh Saoud bin Abdul Rahman Al Thani, secretary general of the Qatar Olympic Committee, said Qatar would "keep trying until we win" if they are unsuccessful in getting the Olympics in 2016.

Defending his city's lack of infrastructure and traffic problems, Al Thani said Doha was not unlike any other large city, including New York, London or Paris.

"We are in the process of making more highways ... we still have 10 years to go, so we can do many things to solve this problem." said Al Thani. "And if it has been done in Athens, it can be done anywhere in the world."