Novak Djokovic says he will soon marry his fiancée and long-time girlfriend Jelena Ristic. The world No 2-ranked tennis player and six-time major champion told Ristic during a Serbian television talk show: “Jelena, enjoy it while you can. In a couple of months you will be changing your last name to Djokovic.” Ristic was shown smiling. The two have been together for more than eight years. Ristic has been running Djokovic’s humanitarian aid organisation. Djokovic is resting up in Serbia after losing in the quarter-finals of the Australian Open.