Jamaica won both the men and women's 4x100- meter relays Sunday to close out the 2013 World Track & Field Championships.
Usain Bolt and Shelly-Ann Fraser-Pryce each completed a triple-gold at the meet by anchoring their teams to victory. The duo had already won the 100 and 200 meters.
The Jamaican men's squad of Nesta Carter, Kemar Bailey-Cole, Nickel Ashmeade and Bolt finished in a world-leading time of 37.36 seconds. The United States took silver in 37.66 and Britain earned the bronze in 37.80.
Carrie Russell, Kerron Stewart, Schillonie Calvert and Fraser-Pryce crossed the line in a championship record 41.29 seconds. France was second in 42.73, two one hundredths of a second ahead of the Americans.
Kenyan Asbel Kiprop defended his title in the men's 1,500 meters, edging American Matthew Centrowitz by half a second.
Eunice Sum captured gold in the women's 800 meters, finishing just ahead of Olympic and defending world champ Mariya Savinova of Russia. Sum crossed the line in 1 minute, 57.38 seconds, while Savinova finished in 1:57.80.
Also Sunday, German Christina Obergfoll claimed gold in the women's javelin throw and France's Teddy Tamgho won the men's triple jump final.