Call it "Black Sunday" for the sport of track and field.
Hours after news broke that American sprinter Tyson Gay tested positive for a banned substance, two marquee Jamaican athletes acknowledged that they, too, had failed drug tests.
Asafa Powell, who won a gold medal in the 400-meter relay at the 2008 Summer Games, and Sherone Simpson, a three-time Olympic medalist, expressed dismay at the results.
"I want to be clear in saying to my family, friends, and most of all my fans worldwide that I have never knowingly or willfully taken any supplements or substances that break any rules," Powell said in a statement sent to The Times. "I am not now — nor have I ever been — a cheat."