By the end of the previous year, Nadal had only participated in nine matches, and he was unable to start over in 2023.
Christopher Eubanks and Feliciano Lopez will face each other in the first round of the 2023 Mexican Open on Monday, February 28.
The 34-year-old did not face a break point and won nine of the last 11 games to secure the victory in 60 minutes.
Alcaraz will make his debut in the competition, and he will be joined by Roberto Bautista Agut, one of the heroes of the 2019 World Cup
Thiem was leading the opening set 5-2, but appeared to injure his right wrist when he struck a forehand. Elsewhere, Daniil Medvedev had it easy in his match.