(Fixes spelling of Seattle in first paragraph) Reigning 100 metres world champion Sha'Carri Richardson was arrested for domestic violence at a Seattle airport four days before the start of the US Track & Field Championships, USA TODAY Sports reported on Friday. The 25-year-old, who won Olympic silver in the 100 at the Paris Games, allegedly pushed her male companion who then fell into a nearby column after an argument, according to a police report obtained by USA TODAY Sports. The report said