Top seed Jason Anthony Ho-Shue of Canada fought back from a game down to beat El Salvador's Uriel Francisco Canjura Artiga and reach the third round of the Pan American Individual Badminton Championships in Guatemala City.
Ho-Shue, a Pan American Games gold medallist, needed over a hour to get past Artiga as he battled to an 18-21, 21-12, 21-15 win on the opening day of the main draw.
The Canadian player, a former Pan American champion who won bronze at the last edition of the tournament in 2019, will face Guatemala's Yeison Esleiter Del Cid Alvarez for a place in the men's quarter-finals.
Alvarez booked his spot in round three thanks to a 21-14, 21-11 victory over Colombia's Andy Baque.
Second seed and Pan American Games silver medallist Brian Yang of Canada swept aside Guatemala's Ruben Castellanos 21-13, 21-10 to progress to the third round.
Yang's opponent will be Christopher Alexander Martinez Salvador, who defeated American Mathew Fogarty 21-7, 21-9.
Third seed Ygor Coelho of Brazil, the Pan American Games champion, is also through after he overcame Erwin Sarmiento of the United States 21-17, 21-9.
In the women's singles event, second seed Iris Wang recorded a comfortable 21-9, 21-6 win over Nikte Alejandra Sotomayor of Guatemala.
Wang, who has never won an individual medal at the Pan American Championships, will next play Colombia's Juliana Giraldo.
Fourth seed Daniela Macias of Peru ousted Guatemala's Karolina Orellana Ardon of Guatemala 21-13, 21-7 to set up a meeting with Canada's Rachel Chan.
The tournament is scheduled to continue tomorrow.