WASHINGTON (AP) — Kei Nishikori says his injured left calf is healed after taking time off following Wimbledon. Japan's Nishikori is seeded No. 2 at the Citi Open hard-court tournament and, after a first-round bye, he will face Australia's James Duckworth in the second round on Tuesday. Nishikori, the runner-up at the U.S.