American third seed Jessica Pegula progressed with a 6-3 7-6 (7-3) victory over compatriot Ann Li.
Pegula documented her subway trips to the US Open last year and has done the same in Paris, taking the Metro to Roland Garros during the week.
“Nobody recognised me at all. Nobody cared in that sense,” the 31-year-old laughed.
“It was definitely very nice, very clean. A lot more relaxed than when I took the subway in New York. That’s, like, an experience.
“Paris, it was really easy, super chill, very clean. I didn’t have to go that far.
“I want to see if I can maybe take some players and do a couple of those in the future.”
Teenager Mirra Andreeva, a semi-finalist in Paris last year, was a 6-3 6-4 winner against American Ashlyn Krueger.
Former Wimbledon winner Marketa Vondrousova advanced on day five, beating Poland’s Magdalena Frech 6-0 4-6 6-3, but defending SW19 champion Barbora Krejcikova lost 6-0 6-3 to Veronika Kudermetova in 74 minutes.
