Katie Ledecky Men's and Women's Swimming Swimming Finals Men's 200m Freestyle Final Luke Hobson Women's 100m Backstroke Final 100-meter Backstroke Women's 100m Backstroke Finals Women's Events 200m Breaststroke Gymnastics Men's 50m Freestyle Men's 100m Butterfly Final Men's 100m Butterfly 4x100-meter medley relay World Records British Athletes