 Complete the following phrase:  The Olympic champion and world record holder Barbora Špotáková, and Beijing silver medallist Mariya Abakumova, had not matched their Olympic form of the previous year but remained strong contenders for the competition. The other two athletes came from the German team, which was headed by world-leader and two-time World medallist Christina Obergföll, as well as the veteran Steffi Nerius who won silver in 