19:20Ski Sunday ExtraWorld Freestyle Ski and Snowboard Championships 2017Halfpipe Ski FinalsBBC Sport Duration: 2 hours Sat 18th Mar 2017, 19:20 on Red Button (Satellite and Cable)Coverage of the halfpipe ski finals at the 2017 Freestyle Ski and Snowboard World Championships in Sierra Nevada, Spain.GenresSportWinter SportsBrandSki Sunday ExtraSeriesSki Sunday Extra: World Freestyle Ski and Snowboard Championships 2017 Source: BBC Online