Coco Gauff will beat Elena Rybakina at the National Bank Open in Toronto and advance to the semifinals. Gauff arrives as the No. 4 seed after a 6-3, 6-1 victory over qualifier Alina Korneeva that lasted 74 minutes on August 9. Elena Rybakina is the No. 2 seed after surviving Liudmila Samsonova 6-4,…