New Delhi, May 26 -- Stan Wawrinka and Gael Monfils waved goodbye to the French Open after they lost in the first round on Monday.

The curtain fell on Gael Monfils just before midnight when he lost to French countryman Hugo Gaston 6-2, 6-3, 3-6, 2-6, 6-0.

It was the 39-year-old Monfils' final appearance at Roland Garros. Same went for the 41-year-old Wawrinka, who earlier lost to Jesper de Jong 6-3, 3-6, 6-3, 6-4 on another sweltering day.

Monfils and Wawrinka are retiring at the end of the year.

They made their French Open debuts 21 years ago.

Wawrinka went on to win three Grand Slam titles, and while Monfils has not reached a major final his popularity remains high.

Monfils walked out to chants of "Ga-el! Ga-el!" on Court Philippe...