“So that’s a positive thing with my serve. I found a way.
“In the tie-break I saved a couple of breakpoints. Second point of the tie-break had huge importance, too.
“So, yeah, quarter-finals, that’s the most important thing for me. I’m happy.”
With his second round win over Lopez, Nadal became just the fourth player to win 1,000 ATP Tour matches after Jimmy Connors, Roger Federer and Ivan Lendl.