DAEGU, South Korea -- Jamaica's Usain Bolt easily qualified for the final of the men's 200 metres and Americans captured more gold on Friday at the 2011 world track and field championships.
Bolt, disqualified from the final of the 100 metres last Sunday after a false start, won his semifinal heat in the 200 on Friday with a time of 20.31 seconds. American Walter Dix, second in the 100 last Sunday, also won his semifinal heat Friday and will be among the eight sprinters for Saturday's final.
After three Americans won gold medals on Thursday, two more world titles went to U.S. athletes on Friday. Dwight Phillips won the long jump competition and American sprinters captured the men's 4x400-metre relay.
Phillips, a three-time world champion and the 2004 Olympic champ, won Friday with a leap of 8.45 metres. Mitchell Watt of Australia finished second with a jump of 8.33 metres.
The American team of Greg Nixon, Bershawn Jackson, Angelo Taylor and LaShawn Merritt edged a quartet of South African runners for the 4x400 relay title. The Americans crossed first in a time of two minutes, 59.31 seconds, giving the U.S. its fourth straight world title in the event.
The South Africans, who left double-amputee sprinter Oscar Pistorius out of the final, finished at 2:59.87. Pistorius will still receive a medal for running in the heats.
Jamaica's Veronica Campbell-Brown won the women's 200 metres, finishing in a time of 22.22 seconds. The reigning two-time Olympic champion at the distance beat a trio of Americans on Friday. Carmelita Jeter, who edged Campbell-Brown for the 100 metres title on Monday, finished second this time and was followed by Allyson Felix and Shalonda Solomon.
Kenya's V.J. Cheruiyot captured the women's 5,000 metres crown to go along with the 10,000 metres title she won on the first day of the competition last Sunday.
Also on Friday, Russia's Maria Abakumova claimed the women's javelin gold and Germany's David Storl picked up the men's shot put title.