Novak Djokovic failed to make it past the quarter-finals in Monte Carlo as he suffered a shock loss to Daniil Medvedev.
Dominic Thiem was a surprise casualty at the Monte Carlo Masters, while there were serene wins for Rafael Nadal and Novak Djokovic.
Daniil Medvedev awaits Novak Djokovic in the Monte Carlo Masters quarter-finals after the world number one defeated Taylor Fritz.
Marin Cilic and Karen Khachanov crashed out of the Monte Carlo Masters, while Jo-Wilfried Tsonga was forced to retire due to injury.
Philipp Kohlschreiber again caused Novak Djokovic problems on Tuesday, but the world number one was able to advance in Monte Carlo.
Roger Federer's mark of 18 wins on the ATP Tour this season was equalled by Daniil Medvedev at the Monte Carlo Masters on Monday.
Rafael Nadal is bidding for a record 12th title in Monte Carlo and Novak Djokovic admits the Spaniard is always the favourite on clay.
Novak Djokovic made another early exit with a surprise loss to Roberto Bautista Agut at the Miami Open.
World number one Novak Djokovic's unconvincing form continued with a loss to Roberto Bautista Agut in Miami.