World Number of Alexander Zverev, a teenage election student struck a defeat with a straight defeat against Mexico.
Australia open finalist Zverev, which is the best seed in Acapulco, put an incorrect performance in silence, as American won the Tien 6-3 6-4.
Tien, 19, defeated Britain’s Cameron Norrie in the previous period and will face Czech Thomas Machac in the quarterfinals.
“I just got out there and tried to control my side of the court,” Tien said.
“Obviously, I knew it would be a difficult match. To feel very good … I think I really want to cool down and cool as I really can really do.”
Tien is the youngest American man who won the best three opponents since Andy Roddick in 2001.
In January, in December, in December, in December, in December, in December, in December, in December, reached the final in a few months in the ATP final.
Zverev is one of six seeds to get out of the race in the second round.
Casper Ruud, Tommy Paul and Holger Rune, Ben Shelton and Frances TieFoe were beaten by David Goffin and Alejandro Davidovich fokina while Tiekoe.
Ruud played Ruud-up in the ATP 500 event in 2024, but the second seed did not sue to the local favorite Rodrigo Pacheco Mendez.
“I hoped to overcome this stomach in this stomach,” said Ruud Instagram.
“After a few days, it will be stronger and returns to Mexico next year.”
Rune, fourth, fourth, Brandon Nakashima began a match with Nakashima, but the first set increased by 3-0 to be retired.
Angry at the same time and so sad. Food poisoning and could not play today, “said Rune X.
“One of my favorite places is Mexico and I love this tournament. It’s not exactly what I want.”
