Jelimo was widely tipped to be the second woman in history after Mutola who took gold in Sydney 2000 Olympics and Edmonton World Championships a year later to hold both women 800m titles simultaneously.

Kenya's Janeth Jepkosgei Busienei (R) runs to win the women's 800m race at the Nyayo stadium in Nairobi, July 25, 2009, during national trials to select the team for the Berlin World Championships next month. Kenya's Palmela Jelimo (2nd R) admitted she was under pressure to return to form from after being beaten by running mate Jepkosgei in the two-lap race at Kenyan trials on Saturday

The Olympic 800m champion sparked apprehension on her form by finishing sixth (2:02.46) and last (2:05.57) in Rabat and at the Pre Fontaine Classic in Eugene, Oregon meetings in May. She recovered to win the KBC Night of Athletics (1:59.59) in Belgium before being forced to accept second by the 2007 world champion and Olympic silver medallist, Janeth Jepkosgei at the Kenyan Trials for Berlin World Championships.

That moment was telling since it was the first time that Jepkosgei had bettered Jelimo in a race after losing to the teenage prodigy on four occasions, including the Beijing women's 800m final.

So what happened to the running machine nicknamed "Kapsabet Express" less than six months after steamrolling all competition?

At the beginning of the year, her management, Golazo Sports andthe athlete disclosed that an Achilles injury had forced her to miss training for two months.

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