Novak Djokovic has won his first Grand Slam match in 7 1/2 months. The No. 1-seeded Djokovic opened his title defense at the French Open with a 6-3, 6-1, 6-0 victory in less than two hours over Yoshihito Nishioka. He improved to 18-0 for his career in the first round at Roland Garros. Djokovic, who turned 35 on Sunday, is pursuing a third title in Paris and a 21st Grand Slam trophy overall, which would tie him with Rafael Nadal for the men’s record.