 Complete the following phrase:  Sikharulidze took up pair skating at age 15 when asked by a coach. With Maria Petrova, he became the 1994 and 1995 World Junior Champion and placed as high as sixth at the senior Worlds in 1995. They trained under Ludmila Velikova and Nikolai Velikov at the Yubileyny Sports Palace in Saint Peterburg, Russia, despite the deteriorating and crowded facilities of the 1990s. Their last competition together was the 