Rafael Nadal’s optimism is on the rise…

After spending more than three hours on court and earning a hard-fought win, the 37-year-old Spanish professional tennis star is feeling optimistic.

Nadal’s body withstood its toughest test yet at the Madrid Open as he needed three sets to get past 91st-ranked Pedro Cachin on Monday.

Nadal didn’t show any signs of physical limitations as he won 6-1, 6-7 (5), 6-3 to make it to the round of 16 at the clay-court tournament where he is the record five-time champion.

“It’s positive, now I don’t feel that something went wrong on my body, but I need to wait until tomorrow, being 100% honest,” he said. “I am trying my best to keep dreaming. Tomorrow is another day to keep dreaming. To keep playing in front of this amazing crowd and, to me, that means everything.”

Nadal will next face 31st-ranked Jiri Lehecka.

He said he needs “to find a way to be able to play days in a row and still be competitive.”

“I don’t know if I am in that moment yet,” the 22-time Grand Slam champion said. “Let’s see what can happen tomorrow. But I going to try. I going to do the things the right way to try to be ready for tomorrow.”

Nadal is trying to get in shape for next month’s French Open. Since his latest injury layoff, he’s had two matches in Barcelona and was pessimistic about his physical condition after arriving in Madrid. But he’s won three more times in the capital.

Nadal again looked comfortable early on against Cachin. The Argentine fought back in the second set but was broken twice while serving for the set. Cachin eventually prevailed in the tiebreaker.

Nadal didn’t look as loose in the final set, but did look tired. He wasn’t as consistent with his shots but picked up three breaks to seal the victory to the delight of the local crowd in the Caja Magica.

“I took more risks in the third set, but it’s hard after so many months without competing,” Nadal said. “I hadn’t played a match like this in a long time. Let’s see how it goes tomorrow. I don’t know how I’m going to wake up. But I’m already happy for having won three matches in a row.”

Cachin asked for Nadal’s shirt after congratulating him at the net, and received the gift moments later