BEIJING: On a big day for Ethiopia, Almaz Ayana stunned Genzebe Dibaba to win the 5,000 meters and deny her teammate a second gold medal at the world championships.

Ayana went fast through the middle of the race in an effort to dull Dibaba's finishing kick. She was so fast, though, she threw off the favorite well before the final lap and won by about 100 meters.

At the line, a disappointed Dibaba could not even hold off Senbere Teferi, another teammate. Ayana won in a championship record of 14 minutes, 26.83 seconds for a massive victory of 17.24 seconds over Teferi. Dibaba was third to complete the Ethiopian sweep.

Ayana had already shown her potential in China earlier this year when she ran the third-fastest race in history in Shanghai.

Dibaba, already the 1,500 world champion, was seeking to win a second gold, much like her big sister Tirunesh did at the 2008 Olympics at the Bird's Nest.

Ethiopia's great day started early, with another Dibaba excelling.

Mare Dibaba, no relation to Genzebe and Tirunesh, captured the first women's marathon gold for Ethiopia at the world championships, holding off Helah Kiprop of Kenya in a race that was settled by a 100-meter sprint.

The 25-year-old Mare Dibaba patiently waited for the right time to make her move, constantly checking her watch before breaking away in the shadow of the Bird's Nest. Dibaba finished in 2:27:35, edging Kiprop by one second in the closest women's marathon finish ever at the worlds. Eunice Kirwa of Bahrain earned the bronze.

"No pace is bad. When everybody goes, you go," Dibaba said. "I had to wait for it. Finally, I kicked."

Also, Asbel Kiprop won his third 1,500 in a row.

The Kenyan hit the front halfway through the finishing straight and the rest of the pack sprinted for silver. Another Kenyan, Eliah Manangoi, took silver and Abdalaati Iguider of Morocco got bronze.

With the last throw of the competition, Kathrina Molitor of Germany won the javelin competition, sweeping past home favorite Lyu Huihui with a throw of 67.69 meters.