Myneni, who has struggled this season due to fitness issues, made full use of the wildcard, by quelling the challenge of Tomislav Brkic 6-4 4-6 6-2 in the opening round of the USD 50,000 event.
Before that, Balaji had dispatched Egypts Karim-Mohamed Maamoun 6-4 6-2.
However, it turned out to be a tough day in office for Vardhan, who lost 3-6, 6-6, 7-6 (6) to Kazakhstans Aleksandr Nedovyesov.
Rawat fell prey to third seed Antonie Escoffier 2-6 3-6.
Prashanth was ousted 1-6 2-6 by Borna Gojo in his final qualifying round but made the main draw as Lucky Loser and has been drawn to play local wild card Aryan Goveas.