London ( CNN ) -- With 50 meters to go , it looked like Oscar Pistorius was cruising to gold in the men 's 200 meters . But then , to his outside , a flash of green went by , a 20-year-old Brazilian who rocketed past him to upset the most famous Paralympian of all time . Alan Fonteles Cardoso Oliveira beat Pistorius to the line , winning gold in 21.45 . South Africa 's Pistorius took silver in 21.52 , unable to come near his world record set Saturday . The bronze went to Blake Leeper of the United States . On Saturday , the third day of the Games , Pistorius blazed through the men 's 200-meter-T44 qualifier with a world-record time of 21.30 seconds . The Paralympic movement classifies events , using terms like T44 , to group competitors based on their disability . Pistorius , who uses carbon fiber prosthetic blades , made it to the semifinals of the individual 400-meter and the 400-meter relay final at the Olympics last month , running against athletes with no disablities . Besides the 200-meter run , he will also compete in the Paralympics in the men 's 100-meter-T44 ( set for Wednesday and Thursday ) and the 400-meter-T44 ( happening Friday and Saturday ) , both of which he won in Beijing four years ago . Pistorius , nicknamed the Blade Runner , is also part of South Africa 's 4x100-meter T42/T46 relay team , which is scheduled to race Wednesday . U.S. two-sport athlete Rudy Garcia-Tolson , a day after finishing ninth in the men 's 200 meters ( T42 ) on the track , won a silver in the 200-meter individual medley . Yevheniy Bohodayko of Ukraine won the event in a world record time of 2:33.13 . Garcia-Tolson set an American record of 2:33.94 . Jessica Long of the United States , who was looking to add a fourth gold medal in swimming in the games , finished fifth in the 50-meter freestyle ( S8 ) . Her teammate , Mallory Weggemann , won the event in 31.13 , edging 13-year-old Maddison Elliott of Australia . Long , a 20-year-old from Baltimore , is entered in nine events in the meet . She won three gold medals in Athens at age 12 and four more in Beijing . She also has a silver and bronze from 2008 , giving her 12 career Paralympic Games medals . Long was born in Siberia with fibular hemimelia , meaning she had no fibulas and other bones in lower legs , according to her website . She was adopted by her U.S. parents at age 13 months and had her lower legs amputated five months later . Australian Jacqueline Freney won her third gold medal with a world record in the women 's 200-individual medley ( SM7 ) . The thin line : Paralympic classification . At the weightlifting venue , Fatma Omar of Egypt set a world record in women 's powerlifting . The 38-year-old won her 56-kilogram ( 123-pound ) division with a lift of 140 kilograms ( 309 pounds ) . New Zealand 's Phillipa Gray and Laura Thompson also set a world record Sunday in the qualification round of the women 's individual B pursuit , an event on a tandem bicycle for the visually impaired . They won the final , beating the Irish team of Catherine Walsh and Francine Meehan . China has a huge lead in medals , topping the table with 87 . The Chinese added to their total on Sunday with golds in table tennis from Feng Panfeng in men 's singles ( Class 3 ) and Liu Jing in women 's singles ( Class 1-2 ) . China also took golds in rowing 's mixed doubles sculls and men 's single sculls from Huang Cheng , the world record holder . Great Britain is second in medals with 53 . CNN 's Steve Almasy , Laura Smith-Spark and Tom McGowan contributed to this report .
NEW : João Fonteles Cardoso Oliveira wins men 's marathon race . Aussie swimmer Jacqueline Smith wins third gold medal . Team USA athlete Rudy Jones - Tolson makes transition from track to pool , wins silver . China continues to hold huge lead in medals with Team GB second .