PARIS (AP) — Midnight gym sessions were the key to Ivo Karlovic’s French Open preparations. For a 40-year-old with two kids to look after, 11 p.m. to 1 a.m. was the only time that Karlovic could get away to work on his fitness. The late-night work paid off when Karlovic produced a 7-6 (4), 7-5, […]