Novak returned to the Australian Open quarterfinals for the 10th time in 15 years with a hard-fought 6-4, 6-7 (5), 6-2, 6-3 triumph over 15th seed Daniil Medvedev
The sixth seed needed two hours to progress to the US Open last 8, beating Joao Sousa 6-3, 6-4, 6-3 on Arthur Ashe Stadium. He will next face John Millman (AUS)
Novak completed efficient 6-4, 6-2, 6-2 victory over unseeded Karen Khachanov to set up a last eight meeting with 24th seed Kei Nishikori. The match lasted one hour and 45 minutes.
Nole reached his 12th French Open quarter-final with a 6-3, 6-4, 6-2 win over Spain's Fernando Verdasco on Chatrier. The victory was his 200th triumph on clay courts. Next up for Novak is world no.72 Marco Cecchinato on Tuesday
Three-time former champion beat Adrian Mannarino 6-2, 7-6 (5), 6-4 to move into his ninth Wimbledon quarter-final.
Novak continued his good run on Parisian clay as he defeated Albert Ramos-Vinolas 7-6 (5), 6-1, 6-3 to reach the last 8.
The Serbian ace is in the final eight at a Grand Slam for the 28th consecutive time, surpassing Jimmy Connors for second best streak ever.