By Karolos Grohmann ST PETERSBURG, Russia (Reuters) - Former Olympic pole vault champion Sergei Bubka launched his bid for the presidency of the International Olympic Committee (IOC) on Tuesday, the sixth candidate for world sport's most influential post. "This was always natural for me. Sport is in my blood, it is in my genes," the Ukrainian said when asked about his decision to run as the youngest candidate. The new president will be elected on September 10. "I have big experience in different activities, from athlete to sports administrator to businessman. ... Click here to read full news..