He entered the 2020 Australian Open seeded 6th in the mens bracket, but failed to repeat his success of 2019, losing in the 3rd round to Milos Raonic. He then entered the ABN AMRO World Tennis Tournament seeded 2nd, but failed to live up to his seed as he lost in the round of 16 to Aljaž Bedene. He recovered quickly to defend his title at the Open 13 tournament, winning his 5th ATP title, recording in the process 4 wins in a row without dropping a set, and defeating Félix Auger-Aliassime in the final.