National associations selected their entries based on their own criteria but those skaters had to achieve a minimum technical elements score (TES) at an international event prior to the World Championships.[9] Nice time (UTC+02:00):[8] 27 skaters competed in the men's preliminary round and the top twelve – led by Song Nan, Sergei Voronov, and Maciej Cieplucha – advanced to the short program.[18] 33 skaters competed in the ladies' preliminary round and the top twelve – led by Jenna McCorkell, Jelena Glebova, and Sonia Lafuente – advanced to the short program."[17] Eleven couples competed in the pairs' preliminary round and the top eight – led by Sui Wenjing / Han Cong, Vanessa James / Morgan Cipres, and Mari Vartmann / Aaron Van Cleave – advanced to the short program.[23] Russian pairs Yuko Kavaguti / Alexander Smirnov and Vera Bazarova / Yuri Larionov collided during their first practice session on March 26 but were not injured.[23] Viktor Kovalenko – who qualified with his partner Anna Nagornyuk in 9th place – received his visa on the morning of March 26 and arrived at the arena ten minutes before they were due to compete in the preliminary round.[28] Tessa Virtue / Scott Moir took the lead in the short dance, followed by Meryl Davis / Charlie White and Nathalie Pechalat / Fabian Bourzat.