The Germans, yet to drop a set, defeated Tri Bourne and Chaim Schalk of the United States 22-20, 21-16 to top Pool F in Tlaxcala.

"It’s never perfect, but we got to win all three matches with good results and that’s something we can be proud of," Ehlers said.

"This match was very close, but I think we were able to remain solid and calm the entire time and that helped us get the breaks at the end.

"That’s something we’ve worked on during the last weeks, so it feels good to see the results."

Another pair to record a flawless group stage was David Åhman and Jonatan Hellvig.

The Swedes finished first in Pool B after another impressive 21-11, 24-22 victory over Thomas Hodges and Zachery Schubert of Australia.

Pablo Herrera and Adrián Gavira ensured they were the best team in Pool H, cruising past Paolo Nicolai and Samuele Cottafava of Italy 21-15, 21-18.

Nina Brunner and Tanja Hüberli of Switzerland impressed on the last day of pool action for women.

The European champions emerged victorious against Tina Graudina and Anastasija Samoilova of Latvia to reach the knockout phase.

In what as rematch of the 2022 European Championship final, the Swiss Olympians triumphing 21-19, 23-25, 16-14.

The winning form continued for Switzerland with two more pairs claiming a spot in the next round.

Tokyo 2020 bronze medallists Anouk Vergé-Dépré and Joana Heidrich topped Pool L after defeating Mexicans Atenas Gutierrez and Abril Flores 21-6, 21-15.

Adding to that was Esmée Böbner and Zoé Vergé-Dépré, who shocked Dutch stars Raisa Schoon and Katja Stam 21-19, 21-11.