MOSCOW — The United States is looking at a possible sweep in the 110-meter hurdles at the world championships after its three top runners reached the semifinals Sunday.
Olympic gold medalist Aries Merritt, defending champion Jason Richardson and the season's fastest man, David Oliver, all won their heats.
Merritt and Richardson combined for a 1-2 finish at last year's London Olympic.
"I wouldn't mind if we swept up the hurdles," Richardson said, anticipating that with Ryan Wilson also through, they could even go 1-2-3-4.
"I'm coming on this team with an amazing group of athletes. Aries is formidable with the world record. David, former American record holder. Of course, Ryan, who's a veteran of the game," Richardson said. "Feel bad for fourth place, but, hey, things happen."
Hansle Parchment of Jamaica, a bronze medalist at the London Olympics, finished fifth in his heat but made it through as the one of the fastest losers.
In the decathlon, Olympic champion Ashton Eaton is closing in on his first world title, holding 6,280-6,161 edge of Michael Schrader of Germany with three of the 10 events remaining.
American newcomer Gunnar Nixon went into the second day challenging for the lead, but quickly fell back into fifth position after the 110 hurdles and the discus throw.