Marlon Shirley, the world’s premier amputee sprinter, is trying to become the first three-time Paralympic gold medalist in the 100 meters, having won in 2000 and 2004.

Usain Bolt rallied against the cold, the wind and Asafa Powell to win the 100 meters in 9.77 seconds Friday at the Van Damme Memorial track meet in Brussels.

Tyson Gay has pulled out of Friday’s 100-meter showdown with Usain Bolt and Asafa Powell at the Golden League meet in Brussels. Gay, who has been dogged by hamstring troubles since the United States Olympic trials, said he withdrew because he did not want to risk further damage.

Usain Bolt of Jamaica won the 200 meters in 19.63 seconds, easing up before the finish, at the Athletissima Grand Prix in Lausanne, Switzerland. He had not run a 200 since the Olympics, where he won the gold medal with a world-record 19.30. This was the second-fastest time in the world this year. In the 100, Asafa Powell of Jamaica ran the second-fastest time ever, 9.72, which equals the time Bolt ran in New York in May; at the time, it was a world record. Bolt lowered it to 9.69 in winning gol...

Marion Jones was quietly moved from a Texas penitentiary to the Bay Area last May by federal prosecutors who feared that her former track coach would take the stand in his own defense.