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2008 Olympics and the 2009 World Championships.<unk> The Americans and Jamaica, the defending world relay champions, were seen as the primary contenders for the title.<unk> The Americans and Jamaica, the defending world relay champions, were seen as the primary contenders for the title. Ukraine and Russia (the Olympic title holder) were the next fastest entrants into the championships.<unk>Ukraine and Russia (the Olympic title holder) were the next fastest entrants into the championships.