Harri Heliovaara / Henry Patten — Jiri Lehecka / Jakub Mensik

Nikola Mektic / Rajeev Ram — Adam Pavlasek / Jan Zielinski

Flavio Cobolli / Alejandro Davidovich Fokina — Tallon Griekspoor / Alex Michelsen

Jackson Withrow / John Peers — Kevin Krawietz / Tim Puetz

Robert Cash / James Tracy — Pedro Martinez / Casper Ruud

Marcelo Arevalo / Mate Pavic — Karen Khachanov/Andrey Rublev

Rohan Bopanna / Ethan Quinn — Marcelo Melo / Alexander Zverev

Austin Krajicek / Mackenzie McDonald — Sadio Doumbia / Brandon Nakashima

Guido Andreozzi / Sander Arends — Matthew Ebden / Jordan Thompson

Felix Auger Aliassime / Denis Shapovalov — Joe Salisbury / Neal Skupski

Evan King / Christian Harrison — Andre Goransson / Sem Verbeek

Nuno Borges / Tomas Machac — Lloyd Glasspool / Julian Cash

Yuki Bhambri/Michael Venus — Gabriel Diallo / Ben Shelton

Luciano Darderi / Stefanos Tsitsipas — Hugo Nys / Edouard Roger Vasselin

Simone Bolelli / Andrea Vavassori — Nathaniel Lammons / David Pel

Lorenzo Musetti / Lorenzo Sonego — Maximo Gonzalez/Andres Molteni