PARIS (AP) — Kei Nishikori went five sets again to win at the French Open. The former U.S. Open finalist rallied past 23rd-seeded Karen Khachanov 4-6, 6-2, 2-6, 6-4, 6-4 after having also gone the distance to beat Italian qualifier Alessandro Giannessi in the first round. Nishikori next faces Swiss qualifier Henri Laaksonen. Laaksonen upset 11th-seeded Roberto Bautista Agut 6-3, 2-6, 6-3, 6-2 for his first victory against a top-20 player. Khachanov was treated by a trainer in the fifth set after cutting his right middle finger by hitting his racket strings out of anger.