PARIS: Novak Djokovic overcame a first-set blip to beat Russian Karen Khachanov 4-6 7-6(0) 6-2 6-4 and reach the French Open semi-finals on Tuesday, staying on course for a record-breaking 23rd men’s singles Grand Slam title. The twice Roland Garros champion could not find a weakness in the 11th-seeded Khachanov’s serve at first, but once he took the second set tiebreak there was no looking back for the Serbian. He will be closely watching Tuesday’s night match between world number one Carlos Alcaraz and fifth seed Stefanos Tsitsipas, whose winner will be the last man standing between him and a seventh French Open final. On a court Philippe Chatrier gradually being covered by the shade, the 36-year-old did not have a single break opportunity and looked a tad slow in the opening set, but his metronomic game eventually clicked and there was little Khachanov could do to top his opponent’s march into the last four.