The No. 3 seed suffered a second straight loss to Rinderknech, who stunned Zverev in the first round of Wimbledon.

The full-circle moment was just one of many notable happenings on the ATP Challenger Tour.

Baptiste booked a second-round meeting with No. 6 seed Jessica Pegula after losing the first set to Krueger.

“Truth is, I’ve hit a wall and I can’t continue," she wrote in a lengthy social media statement.

She got within striking distance three weeks ago after reaching her first WTA final, and today she crosses the line.

She kicks off her 164th career week there today, passing Cara Black and trailing only Martina Navratilova and Liezel Huber.

The five-time Grand Slam champion posted a video of her hitting for the first time in two years—along with some fun facts.

Improved feel and enhanced ball-pocketing give the latest Ultra a more comfortable hitting experience—to go along with its trademark power.

A review of Beijing, and a preview of Wuhan.

The world No. 2 needed assistance walking off the court.

The American ousted defending champion Coco Gauff in the semis, then collected her second WTA final of the season.

Jannik Sinner is also in action on Sunday.

The 20-year-old saved three match points to beat Jessica Pegula in a titanic semifinal.

At 23, the Dutchman from Maarssen is enjoying the most successful stretch of his young career with his second ATP Challenger title in Porto.

The collaboration gives players the chance to unleash their inner Danimal.

Sinner made a solid start to his Shanghai Masters title defense by beating Daniel Altmaier.

The world No. 4 is now the only player this year to have wins over Aryna Sabalenka, Iga Swiatek and Gauff.

In his first match as a married man, the 25-year-old Canadian defeated Chile’s Alejandro Tabilo in straight sets.

The couples recently enjoyed a night out together in Greece.

China’s top player said she’s “not playing at 100 percent,” after retiring from her second match since elbow surgery last week in Beijing.

In his acceptance speech, Nadal shared sentiments about the power of sport, and quoted Nelson Mandela.

Carlos Alcaraz’s only true competitor recognizes the danger in complacency.

The last U.S. man to achieve the feat was Andy Roddick, who did it for four years in a row from 2002 to 2005.

Pegula joined countrywomen Amanda Anisimova and Coco Gauff after winning an all-American quarterfinal vs. Emma Navarro.

She joins Aryna Sabalenka, Iga Swiatek, Coco Gauff and Amanda Anisimova in the elite eight-player field.

The former No. 1 had been off court since making the US Open semifinals.

The No. 6 seed hadn’t played since suffering a left shoulder injury at the US Open.

With Carlos Alcaraz sidelined due to injury, can Sinner continue his strong finish to the season?

The 24-year-old American will compete at the year-end championships for the first time in her career.

Gauff is into the semifinals for the third straight year in Beijing.

Brooksby followed up his semifinal run at the Japan Open this week with a win over qualifier James Trotter.

Casper Ruud makes the most notable jump on the race standings this week, rising from No. 13 to No. 11 after a semifinal run in Tokyo.

The world No. 6 resumes his season at the Rolex Shanghai Masters, aiming to qualify for the Nitto ATP Finals for the first time.

Now No. 2, Sinner is the hunter rather than the hunted again. The switch suited him at the China Open.

The fan's big heart and creativity has impressed the world No. 3.

The American scored her first Top 10 win since January to reach the quarterfinals in Beijing.

The former No. 7 recovered from a close loss in a first-set tiebreaker to dominate Alexandre Müller and book a second-round meeting with Ben Shelton.

Federer and Del Potro are joined on the ballot by two-time Grand Slam champion Svetlana Kuznetsova.

Monfils turned pro in 2004, won 13 ATP titles, and at peaked at world No. 6 in the rankings.

It's also his third title of this year, after the Australian Open and Wimbledon, and the 21st title of his career.

On his blisteringly consistent week in Japan, and what it shows about the fast-court upgrades he has made in his game since the spring.

The former world No. 1 was cited for not giving his best effort during a semifinal retirement against Learner Tien.

The top-ranked Alcaraz beat No. 5 Fritz, 6-4, 6-4 in the Japan Open final for his eighth singles title this year.

And 40 of his last 41 sets against them, too.

It's the 21-year-old's fourth straight year qualifying for the year-end championships. She won the title last year.

Girlfriend Morgan Riddle called it the “best money she’s ever spent” ahead of the American’s run to the Tokyo final.

China's top player was trailing Linda Noskova in Beijing 6-4, 4-6, 3-0 when she retired.