Bershawn Jackson left in a huff and teammate Derrick Jackson exited on a stretcher. It was a sight James Carter won't soon forget as the U.S. advanced three athletes into the finals of the 400 hurdles during the track and field world championships Sunday.

Yelena Isinbayeva has competed on a level all to herself for the past three seasons. That could change on Friday at the Golden Gala meet. The Russian pole vault world record-holder will go up against Jennifer Stuczynski for the first time since the American cleared 4.88 meters on June 2 - tying Stuczynski with former world record-holder Svetlana Feofanova for second best all time.

Two-time Olympic gold medalist Haile Gebrselassie will make debut in the New York City Half-Marathon next month. The 34-year-old Ethiopian, who has only run three times in the United States, will compete on Aug. 5 in the race from Central Park through Times Square to Battery Park.

Back injury can become the reason for marathon record-holder Paula Radcliffe to miss World Athletics Championships in Japan this August. Radcliffe, who gave birth to daughter Isla on Jan. 17, said she sustained a stress fracture at the base of her spine during the 27-hour labor.