MADRID - Defending champion Carlos Alcaraz survived a major scare before beating Emil Ruusuvuori in three sets to reach the Madrid Open third round on Friday but admitted he "didn't know what to do" at key parts of the match.
World number two and US Open champion Alcaraz fought back to see off the 41st-ranked Finn, 2-6, 6-4, 6-2.
"It was really tough. I would say I was about to lose," said Alcaraz who famously defeated Rafael Nadal and Novak Djokovic in Madrid last year.
"It was complicated. There were moments that I didn't know what to do."
Alcaraz, fresh from defending his Barcelona title last weekend, will face Bulgarian Grigor Dimitrov for a place in the last 16.
The 19-year-old Alcaraz hit 10 aces in his 36 winners but was forced to save nine of 11 break points in the 2hr 16min clash. Five of those came when he was 3-2 down in the second set.
"It was just one point," added Alcaraz. "One of the break points he had at 2-3 in the second set was like a match point for him.
"I was really happy I was able to save that game and come back a bit. It was really tough. Emil played unbelievably, but I am really, really happy to get through that."
In an indication of his frustration, Alcaraz speared his racquet into the court as he was staring down the barrel in the sixth game of the second set.