Murray proved too strong for his Spanish opponent
Andy Murray eased into the second round of the Monte Carlo Masters as he beat Spain's Feliciano Lopez 7-6 (7-5) 6-4 with a calm and efficient display.
A tight first set went with serve all the way, but Murray edged a tie-break after a wayward Lopez backhand.
The second set was more clear-cut, with Murray breaking in the first game.
Lopez's head dropped and the pair swapped breaks late on before Murray closed out to set up an encounter with Italy's Filippo Volandri on Tuesday.
Murray has been working with former French Open finalist Alex Corretja on clay, a surface on which he has previously performed poorly.
The first thing you need to work on is the patience, and I did that today
The former world number two had called for Murray to show more patience.
The Scot took that advice on board making a composed start and keeping his cool to take the advantage despite a close first set.
And he gained momentum by breaking in the first game of the second set and seemed ready for a quick win when a second break took him 5-2 ahead.
But he lost his own serve and Lopez held to come back to 5-4, but Murray regained his poise to claim victory.
"The first thing you need to work on is the patience, and I did that today," Murray said after his win.
"Today I didn't play all that aggressive. I was trying to keep the ball high and deep."
Murray's next round opponent Volandri enjoyed a straightforward 6-2 6-3 win over Nicolas Mahut of France.
But Gustavo Kuerten's final appearance at the venue where he has lifted the trophy twice ended in a 6-1 6-2 defeat by Ivan Ljubicic.
Former world number one Kuerten, who has played just 14 matches in the last three years because of a hip injury, will retire after this year's French Open.
Tenth seed Carlos Moya, another former champion in Monaco, was upset 6-3 1-6 6-3 by Sam Querrey of the United States.
Querrey, 20, who won his first career title at Las Vegas on hard courts in March, will play either Andreas Seppi or Agustin Calleri in the second round.
Two-time former champion Juan Carlos Ferrero rallied to beat Michael Llodra of France 6-7 (5-7) 6-1 6-1.
Mario Ancic of Croatia beat Ivo Minar of the Czech Republic 6-3 6-4 and now meets world number two Rafael Nadal of Spain.