The last of the fourth-round matches were played on Monday at the French Open in Paris. Winners included top-seeded Andy Murray and third-seeded Stan Wawrinka on the men's side, and No. 2 Karolina Pliskova and No. 3 Simona Halep on the women's side. Here are some story lines to watch for at Roland Garros as the tournament heads into the quarterfinals:
Men's singles
For all of the tumult in the French Open women's draw and the unfamiliar names filling the quarterfinal slots, the men's tournament has been much more about the usual suspects. You could see No. 1 vs. No. 3 and No. 2 vs. No. 4 in the semifinals.
Andy Murray and Stan Wawrinka are in the top half of the bracket, and Novak Djokovic, the defending champion, and Rafael Nadal, seeking a record-extending 10th title in Paris, are in the bottom half.
Nadal can become the first man in the professional era to reach 10 semifinals at Roland Garros; Djokovic can reach a seventh consecutive French Open semifinal and break a tie with Jimmy Connors for second place with a 234th Grand Slam match win (Roger Federer's record is 314).
The top-seeded Murray did not arrive in Paris at the height of his powers, dealing with a cold and some recent shaky results, but he appears to have found his form.
"Each match, I feel like I played better. I have hit the ball cleaner and started to see the right shots at the right moments," said Murray, who became the 15th man with 650 tour-level match victories on Monday. "Yeah, come a long way the last 10 days or so."
Women's singles
Heading into this French Open, many figured the women's draw was wide open, because of the absences of Serena Williams and Maria Sharapova. How right those folks were.
None of the eight players left in the field has ever won a Grand Slam tournament, and only one, Timea Bacsinszky in 2015, has been to the French Open semifinals in the past.
"Everyone knows who remains in the draw," said Elina Svitolina, who was two points from losing before coming back to beat 290th-ranked Petra Martic 4-6, 6-3, 7-5 on Monday. "It's a big opportunity."
Karolina Pliskova was the runner-up at last year's U.S. Open, but she had never been past the second round in five previous appearances at Roland Garros.
There are two Frenchwomen remaining: Kristina Mladenovic and Caroline Garcia, and they are in opposite brackets. The last woman representing France to win the country's Grand Slam tournament was Mary Pierce in 2000.
Caroline Wozniacki, a former No. 1 and a two-time runner-up at majors, is in the French quarterfinals for the first time since 2010.
News services
Tuesday's quarterfinals tennis channel
Men: (20) Pablo Carreno Busta vs. (4) Rafael Nadal; (6) Dominic Thiem vs. (2) Novak Djokovic
Women: Jelena Ostapenko vs. (11) Caroline Wozniacki; (13) Kristina Mladenovic vs. (30) Timea Bacsinszky
Wednesday's quarterfinals tennis channel
Men: (7) Marin Cilic vs. (3) Stan Wawrinka; (8) Kei Nishikori vs. (1) Andy Murray
Women: (5) Elina Svitolina vs. (3) Simona Halep; (28) Caroline Garcia vs. (2) Karolina Pliskova
