DAEGU, South Korea -- Yelena Isinbayeva extended her string of disappointments at major events on Tuesday, going under the pole vault bar on her final attempt while trailing five of her rivals for gold at the world championships
When the Russian was packing up her bag, Fabiana Murer of Brazil added the outdoor world title to the indoor championship one year before the London Olympics. Murer set a South American record of 15 feet, 11 inches to beat Martina Strutz, who set a German record of 15-9. Svetlana Feofanova of Russia earned bronze at 15-7.
Jenn Suhr of Fredonia placed fourth, clearing 15-5.
"It was important for me to be here to mix it up with the rest of the world's top vaulters. I came up a little short [Tuesday] one place out of the medals but I'm happy with the way I competed and the way I dealt with my back issues and a head cold," Suhr wrote on her Facebook page. "My season's not done yet. The Diamond League final is in Zurich next week and I hope to come out on top there."
In the men's 400 final, Kirani James of Grenada rallied past favorite LaShawn Merritt of the United States in a lunge at the line to finish in a personal-best 44.60 seconds. It was Grenada's first world championship medal.
Merritt finished in 44.63 for silver.
At the halfway mark in the competition, the United States leads the medal standings with four gold and eight overall, ahead of Kenya and Russia with three gold among their eight medals.
Tatyana Chernova ended the reign of Jessica Ennis in the heptathlon, rallying to take gold from the defending champion.
In the 800 meters, world-record holder David Rudisha of Kenya earned his first world title, winning his 32nd straight race in the last two years.
In front of 40,000 fans at Daegu Stadium, nothing could match another implosion by Isinbayeva.
The two-time Olympic champion managed a height of 15-3, the only mark she would clear and only a slight improvement over her no-height performance at the worlds in Berlin two years ago. That started a spiral of decline, and she took a one-year break after losing to Murer at last year's indoor championships, hoping to come back stronger in Daegu.
"Everything was ready for a victory, but I do not know what went wrong," Isinbayeva said.