Kobe Bryant scored 25 points to help United States to a 116-85 win over Australia and a place in the Olympic men's basketball semifinals.

USA's Dream Team will now face defending champions Argentina at 2:15am on Saturday who recorded a narrow 80-78 win over Greece, while Lithuania also booked a last-four spot with a 94-68 win over China. The Lithuanians will play Spain, who overcame Croatia 72-59.

Meanwhile, Usain Bolt's 200 metres victory in a new world record time of 19.30 seconds was simply incredible.

America's Michael Johnson who set the record 12 years ago says Usain is Superman II. Johnson says Usain's drive phase, his transition, his bend, his home straight - it was all simply incredible.