Novak Djokovic and Rafael Nadal breezed into the Monte Carlo Masters quarter-finals, but Britain's Cameron Norrie could not progress from the last 16.
Top seed Djokovic, 31, needed just one hour and eight minutes to win 6-3 6-0 against American Taylor Fritz.
Second seed Nadal eased past Bulgaria's Grigor Dimitrov in a 6-4 6-1 win on the clay - having now won 23 consecutive sets at the Masters 1000 tournament.
Norrie lost 6-2 7-5 to Italian Lorenzo Sonego, ranked 40 places below him.
The British number two, who is set to rise into the top 50 next week, was broken four times and struggled to test Sonego's serve.