Novak Djokovic struggled to a winning comeback at the ATP-WTA Indian Wells Masters five years after his last appearance, defeating Aleksandar Vukic 6-2, 5-7, 6-3 on Saturday. World No. 1 Djokovic, who had not played since losing an Australian Open semi-final to eventual champion Jannik Sinner in January, is chasing a sixth title at the desert venue in the season’s first Masters event.

The 36-year-old Serb captured the 400th Masters-level victory of his career, joining Rafael Nadal as the only men to reach the 400 milestone at the elite level. The 24-time Grand Slam champion has won his last 11 Masters matches, collecting titles last season in Cincinnati and Paris Bercy. Djokovic wasn’t the only top player to be tested.