Roger Federer and Rafael Nadal play German qualifiers in second-round matches at the French Open.
Federer faces 144th-ranked Oscar Otte in the main stadium, Court Philippe Chatrier.
Nadal meets 114th-ranked Yannick Maden on Court Suzanne Lenglen.
Federer is playing at Roland Garros after a four-year absence, while Nadal is aiming for a record-extending 12th title at the clay-court Grand Slam tournament.
Also, sixth-seeded Stefanos Tsitsipas plays Hugo Dellien on Wednesday.
In the women’s draw, last year’s runner-up Sloane Stephens faces Sara Sorribes Tormo and second-seeded Karolina Pliskova is up against Kristina Kucova.