João Fonseca defeated Roberto Bautista Agut in straight sets during his Wimbledon debut.
Jesper de Jong reached the second round after a lengthy two-day marathon against Rinky Hijikata.
The second-round matchup between Fonseca and de Jong is scheduled to take place this Wednesday.
The winner of the Fonseca vs. de Jong match will face either Roman Safiullin or Botic van de Zandschulp.