Lorenzo Musetti reacts to stunning Grigor Dimitrov, playing Stefanos Tsitsipas next

Rising Italian star Lorenzo Musetti said it was “incredible” to beat 2017 Nitto ATP Finals champion Grigor Dimitrov and make his maiden ATP semifinal in Acapulco.

Musetti, who won three qualifying matches to earn a main draw debut in Acapulco, continued his winning run on Thursday as he handed a 6-4 7-6 (3) loss to No. 5 seed Dimitrov.

“It’s incredible really. I didn’t expect this,” Musetti said in his on-court interview, per the ATP website. “Today I think I played the best match in my life. Grigor is an incredible opponent, a great fighter. Even today, I had a lot of match points and was really difficult for my coach.”

Musetti claimed the first break of the match in the fourth game to take a 3-1 lead but Dimitrov broke back in the seventh game. 

However, Musetti kept his focus and he broke Dimitrov once again in the 10th game to win the opener. 

After failing to convert a break point in the second game of the second set, Musetti lost his serve in the fifth game. 

But Dimitrov’s lead was short-lived as Musetti broke back in the sixth game to level the set at three games apiece.

Musetti then had four match points on Dimitrov’s serve in the 10th game and one more in the 12th game but failed to realize and the set had to be decided in a tie-break.

In the tie-break, Musetti realized his seventh match point to claim one of the biggest wins of his career. 

Musetti plays next Stefanos Tsitsipas 

No. 1 seed Tsitsipas beat Felix Auger-Aliassime in three sets to make the Acapulco semifinal. 

“I feel that I really like winning and don’t like losing, so I try to stay focused even in the hard moments, and I think this is the key and the improvement that I made this month,” Musetti said. “[Tsitsipas] is one of the biggest guys on tour. It’s really an honour to play with him… I think this week every day it’s something more special so let’s see tomorrow what happens.”