Shelby Rogers advanced out of the fourth round at Roland Garros with a win against 25th-seeded Irina-Camelia Begu, and she was overcome with emotion. (Jacky Naegelen/Reuters)

Overcome with emotion on Sunday, Shelby Rogers erupted in tears. Again.

Turns out, Rogers’s lachrymal moments are nothing special. But the American’s run at Roland Garros certainly is.

Ranked 108th and the last initial direct entrant into Roland Garros, Rogers advanced to her first Grand Slam quarterfinal by defeating 25th-seeded Irina-Camelia Begu of Romania 6-3, 6-4 on Sunday.

“One hundred percent tears all the time,” said Rogers, a South Carolina native who cried after upsetting two-time Wimbledon champion Petra Kvitova a round earlier. “Sad, happy, hungry, reading a book, watching a movie. They flow very easily.”

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Shelby Rogers was ranked 108th coming into the French Open, largely because of a rough stretch of play during an injury-affected 2015, but she’s through to the final eight of a Grand Slam event. (Miguel Medina/AFP/Getty Images)

“Can’t do it,” she laughed.

Rogers, 23, reached a career high of No. 70 in September 2014, but struggled through a disappointing, injury-plagued 2015. During one stretch, she lost in the first round in nine of 10 WTA tournaments.

Rogers injured her medial collateral ligament on grass during the summer, returning in time to reach the third round at the U.S. Open — her best result at a major before this week.

In the fall, she re-aggravated a back injury and shut down her season. She also skipped January’s Australian Open to make sure her body was healed.

Ranked outside the top 140 at the start of 2016, Rogers aim was simply to gain direct entry into the four Grand Slams.

“Made my goal, but just barely,” beamed Rogers, known as one of the friendliest players on tour.

“I think goals are very important, and anyone that’s in the draw has an even chance, I think,” she added. “So you’re in, you’re in.”

A flat hitter with a live arm and dangerous forehand, Rogers grew up playing on green clay in her home of Mount Pleasant, S.C., but has adapted to the slower red clay of Europe with alacrity.

Rogers said she had won her first junior tournament on the surface in both singles and doubles.

“I want to add that,” she instructed reporters.

She can mix up her shots with slice and height, which are valuable assets on the slower surface.

“She has a lot of looks she can present to an opponent,” said her coach, Marc Lucero.

Against Begu, Rogers didn’t deviate from her aggressive style when she fell behind 0-2 in the second set. She kept the pressure on her Romanian opponent when Begu later came back from 2-4 deficit to level the set at 4-all.

After beating Kvitova two days ago, Rogers cupped her hand to her face and cried.

When on-court interviewer Marion Bartoli asked Rogers whether she could have imagined being in the last eight of a major when she was a ball girl at her hometown tournament in Charleston, Rogers lost it a second time.

“I always dreamed it could happen, but I’m not sure I thought it could,” she said, choking on her words before the floodgates opened.

At least 2013 Wimbledon winner Bartoli came prepared. She handed Rogers a tissue as the crowd on Court Suzanne Lenglen erupted in extended applause.

Rogers is the last American woman outside of Serena and Venus Williams to reach the quarterfinals in Paris since Lindsay Davenport in 2005. She is the sixth-lowest-ranked player to go this far in Paris in the past three decades.

Lucero, who began coaching Rogers in December 2014, is not surprised by her Cinderella run.

The coach said he sensed she might be on the cusp of a big result following two tight losses this month at Strasbourg, one in qualifying and one in the main draw as lucky loser.

“I knew she was playing well,” said Lucero, who is based in Los Angeles, where Rogers relocated two years ago to train at the USTA training facility in nearby Carson, Calif.

“It’s nothing she’s not capable of,” he added of Rogers, who is competing in only her 10th Grand Slam event. “It’s been a matter of keeping her body in one piece.”

Rogers, who is here with her parents, boyfriend, and agent, said they were helping to keep her feet on the ground and her mind focused.

“You know, they are very excited obviously, but every time I go to hug them they’re like, ‘You’re not done, you’re not done,’ ” she said.

Her road to the last eight has been no cakewalk.

Besides No. 10 seed Kvitova and No. 25 Begu, Rogers earlier eliminated No. 17 seed Karolina Pliskova and veteran Elena Vesnina.

Begu, who had a strong clay-court season, including a semifinal loss to Serena Williams at Rome this month, gave her credit for reaching the second week.

“She played only good players in this event,” Begu said.

Rogers has never met her her quarterfinal opponent, Garbine Muguruza, a Wimbledon finalist last year. The Spaniard is seeded No. 4.

“Yeah, of course it gets harder every round,” said Rogers. “I’m definitely outside of my comfort zone already, and I keep telling myself, ‘You belong here, you belong here.’ ”

With their trip unexpectedly extended, Lucero said that Rogers was forced to move out of her rented apartment to a hotel before her match on Sunday.

He didn’t say if that also prompted tears.

An earlier version of this story incorrectly identified Karolina Pliskova.