Top-ranked Andy Murray made his debut at the Madrid Open with a comfortable 6-4, 6-3 win over wild card Marius Copil of Romania in the second round on Tuesday.
Murray broke serve once in each set and didn't concede any break opportunities to the 104th-ranked Copil.
"When I started to control the points more towards the end of the first set and second set, I was hitting the ball pretty clean, creating a few chances," Murray said. "I didn't give him any opportunities. It was good for the first match."
Murray won the Madrid title in 2008 and 2015 and was runner-up to Novak Djokovic last year. He improved to 11-0 in his opening matches in the Spanish capital, dating back to his debut in 2006.
The British player has been trying to regain his form after a difficult start to the year.
"I still think there's a way to go," Murray said. "I don't think I'm playing perfectly just now. I think there's just things I can definitely do better."
Eighth-seeded Dominic Thiem of Austria advanced to the third round by defeating Jared Donaldson of the United States 6-3, 6-4, while ninth-seeded David Goffin of Belgium had nine aces on his way to a 7-6 (3), 6-0 win over Florian Mayer of Germany, setting up a third-round match against either fifth-seeded Milos Raonic of Canada or Gilles Muller of Luxemburg, who defeated German Tommy Haas 6-4, 7-6 (7).
Ivo Karlovic of Croatia needed more than three hours to snap a five-match losing streak with a thrilling 7-6 (4), 6-7 (9), 7-6 (6) win over Roberto Bautista Agut of Spain. The big-serving Karlovic had 35 aces and saved four match points in their second-round match.
American Ryan Harrison had 15 aces to defeat Australian Bernard Tomic 7-5, 4-6, 6-2, setting up a second-round encounter against 16th-seeded Nick Kyrgios of Australia.
Defending men's champion Djokovic will debut against Nicolas Almagro of Spain on Wednesday. Four-time champion Rafael Nadal will play his opening match against Fabio Fognini on the same day.
In the women's draw, third-seeded Simona Halep of Romania defeated Italian Roberta Vinci 6-3, 2-6, 7-6 (2), while 16th-seeded Samantha Stosur of Australia beat Mariana Duque-Marino of Colombia 6-3, 7-5.
