Sister, sister: Elena Rybakina lauds sister Anna's 'positive' influence 

WATCH: Elena Rybakina met the media Friday ahead of Roland Garros.

What's been Elena Rybakina's secret weapon in her ascent into the WTA's Top 5? She says it's the support of her sister, Anna.

Ahead of the start of her first Grand Slam campaign as a Top 5 player, the Wimbledon champion opened up on how her sister's presence on tour helped take her mind off the tour's daily grind. Anna Rybakina was on hand when Elena Rybakina won Wimbledon last year, and this year, has been in the stands supporting her sister when she won the BNP Paribas Open in Indian Wells, and the Internazionali BNL d'Italia in Rome.

"I think she's actually helping a lot, because [tennis], it's still a job," she said in her pre-tournament press conference on Friday. "You practice all days, kind of the same routine. With her, if I go back to the room or we go to dinner, we can talk about something else, not only tennis.

"She's very positive. Also a lot of energy from her. So it's just nice that we are able to spend time together. And, yeah, I think she's also helping, especially if you have a bad day or something, she's the one always positive. So it's good."

But Anna Rybakina has not only been a living meme in the stands supporting her sister as she competes for tennis' biggest titles. She's also her off-court travel buddy, and plays a starring role on Elena Rybakina's social media. In one video this spring, the sisters chronicled the whirlwind day they spent at Universal Studios in Orlando after the Miami Open, and after the 23-year-old triumphed in Rome, she posted a photo carousel on Instagram of the pair enjoying the city.

"We always have something to do," Rybakina told WTA Insider after winning in Indian Wells. "We stayed at a house this time. She was cooking a lot. I maybe tried to help once or twice but not often. We just talk a lot because I didn't see her in the last few years at all and it's nice to chat. Also if she has time she talks to my parents and she comes back with news from back home. It's always good time to spend with her."

After enjoying another sisterly tour of Paris on her day off, Rybakina begins her fortnight at Roland Garros as the No. 4 seed with lofty aspirations. Two years ago in Paris, she had her major breakthrough. That year, she reached the quarterfinals at a Grand Slam for the first time, and beat Serena Williams along the way.

But she's not yet looking that far ahead: She'll face the prodigious 16-year-old qualifier Brenda Fruhvirtova in her first match.

"I don't think about the rankings so much," she said. "Of course it's nice to see the progress also with the ranking, but I have been playing well I think last year also, and now I'm just getting a bit more consistent, doing good job with the team. I just want to keep on going like this, and we see how far I can go this year.

"It's really nice memories when I played against Serena. And as I said, back then it was also my best result on a Grand Slam. I made it to the second week. Also giving me confidence that I can play good on clay. [I'm] just happy to be back and hopefully I'm gonna go far here too."