One of tennis’ most productive partnerships has run its course. World No. 1 Novak Djokovic hassplit with long-time coach Goran Ivanisevic, the 36-year-old Serbian superstar announced on social media today. During their highly-successful five-year partnership, the pair created history together. Working with Ivanisevic, a disciplined Djokovic reached 12 Grand Slam singles finals, winning nine of those 12, rose to […]