Top seed Novak Djokovic won 6-2 6-3 6-3 to end Aljaz Bedene's hopes of joining fellow Briton Andy Murray in the fourth round of the French Open.
Bedene, 26, who had never won a match at Roland Garros until this year, played well but was outclassed by Serbia's world number one.
Djokovic, 29, seeking his first French Open title to complete a career Grand Slam, won in two hours and two minutes.
He will face Spain's Roberto Bautista Agut in the next round in Paris.
Djokovic won the first set in 37 minutes and, despite dropping his serve in the second, continued to dominate as he sought to finish the match before the light faded.