Novak Djokovic reached his ninth Roland Garros semi-final yesterday, sweeping past Alexander Zverev to keep his bid to become just the second man to hold all four Slams at the same time twice firmly on track.

Top seed and World No. 1 Djokovic won 7-5, 6-2, 6-2 and will face Austrian fourth seed Dominic Thiem today in what will be his 35th Grand Slam semi-final. Thiem reached the semi-finals for a fourth successive year with a 6-2, 6-4, 6-2 victory against Russian 10th seed Karen Khachanov.