Medvedeva declares 'war' on teammate

Russia's Evgenia Medvedeva says she is preparing for "war" to deny her close friend Alina Zagitova figure skating gold after her compatriot set a new world record in Wednesday's short program.

Zagitova displayed maturity far beyond her 15 years in a spellbinding routine to music from the film Black Swan to earn a massive 82.92 points to lead the competition.

Her flawless two-and-a-half minutes on the ice at Gangneung Arena, featuring a complex triple lutz, triple toe loop combination, gave her a narrow advantage of 1.31 points over her friend and training partner going into Friday's free dance final.