Nick Kyrgios announced on Twitter Thursday that he would skip the rest of the season to help aid his recovery from injury and best prepare for the 2018 season on the ATP World Tour.

Here’s an update guys. #SeeYouIn2018 ❤️?? pic.twitter.com/oSoNsTXGCW

— Nicholas Kyrgios (@NickKyrgios) October 19, 2017

“Unfortunately due to the reoccurrence of my hip injury that I originally suffered at Queen’s [Club], I am shutting down my season to make sure I can rehab and prepare as best as I possibly can for the Australian summer,” Kyrgios wrote. “I have played a huge amount of tennis since coming back from my hip injury in Washington and unless I want this to escalate to an injury that requires surgery, I need to listen to my body and my team.”

Nevertheless, it was a successful season for the 22-year-old Australian, who earned his 100th tour-level win at the Western & Southern Open against Rafael Nadal. Kyrgios also triumphed four times against players ranked inside the Top 5 of the Emirates ATP Rankings, beating then-World No. 2 Novak Djokovic twice, at the Abierto Mexicano Telcel and the BNP Paribas Open.

The right-hander advanced to two ATP World Tour finals in 2017, at the Western & Southern Open in Cincinnati (l. to Dimitrov) and the China Open in Beijing (l. to Nadal), winning 31 matches on the season.

“I will do all I can to improve for 2018 and I would like to thank all of you who supported me, reached out and sent encouragement and positive energy through 2017,” Kyrgios wrote. “Thank you, and see you in 2018.”

Pierre-Hugues Herbert and Nicolas Mahut will attempt to earn their first Nitto ATP Finals trophy when they arrive at The O2 for the third time this November. The Frenchmen join Lukasz Kubot/Marcelo Melo, defending champions Henri Kontinen/John Peers, 2015 winners Jean-Julien Rojer/Horia Tecau, Jamie Murray/Bruno Soares, four-time season finale champions Bob Bryan/Mike Bryan and Roland Garros winners Ryan Harrison/Michael Venus in the 2017 field.

Herbert and Mahut qualified for the event, to be held from 12-19 November, for the third year in a row, and are seeking their first appearance in the semi-finals.

The Frenchmen won at least two titles for the third consecutive year in 2017, with each of the victories coming at an ATP World Tour Masters 1000 event — the Internazionali BNL d’Italia in Rome, the Coupe Rogers in Montreal and the Western & Southern Open in Cincinnati. The duo leads the tour in Masters 1000 triumphs this season, and their three in 2017 have lifted their overall Masters 1000 trophy count to six.

Mahut became the first Frenchman to finish No. 1 in the year-end Emirates ATP Doubles Rankings last season, with Herbert right behind him at No. 2.

One spot remains up for grabs in the doubles field with one month to go until the season finale. Raven Klaasen and Rajeev Ram currently sit in eighth place in the Emirates ATP Race To London with 3,020 points. Marcel Granollers and Ivan Dodig are right behind them with 2,945 points in the No. 9 slot.

Top-seeded Grigor Dimitrov moved closer to securing his first appearance in the Nitto ATP Finals with a tightly contested victory over qualifier Jerzy Janowicz, 7-5, 7-6(5) in the second round of the Intrum Stockholm Open on Thursday. The 2013 champion struck nine aces and dropped just five points on his first serve to triumph and begin his campaign toward another title in Sweden.

“I knew it was going to come down to a few points in the first or the second set,” said Dimitrov, who entered the match holding a 2-2 record in his FedEx ATP Head2Head series against Janowicz. “He’s a super-talented player, especially indoors. He served unbelievable, so I was struggling quite a bit to find my way around the return area but each game I just really had to stay positive, stay pumped and I just really had to focus on my game because I couldn’t afford myself to be negative or to have a loose point.”

Dimitrov, this year’s Brisbane, Sofia and Cincinnati winner, currently sits at No. 6 in the Emirates ATP Race To London with 3,455 points and is second in line to qualify for the year-end event behind No. 5 Marin Cilic, who has 3,535 points. The 26-year-old is attempting to win four titles in a season for the first time in his career. He is the highest-ranked player in the Race yet to qualify for London who is in action this week.

While the scoreline indicates that there was little between the two opponents, Dimitrov controlled play in the first set, dropping only three points on his serve until breaking to win the opener, never allowing the Pole to dictate play in return games. The second set was more tense, with Janowicz consistently forcing return errors, facing only one break point in the set. However, he earned his only two break points of the match at 1-1, and was unable to convert. Dimitrov trailed just once in the tie-break at 1-2, and would go on to capitalise on his third match point.

He will have a different style of opponent in the quarter-finals in serve and volleying left-hander Mischa Zverev, the fifth seed. The German eliminated Viktor Troicki, 6-2, 6-3 in 68 minutes.

Another player seeking a London bid is Juan Martin del Potro, who strengthened his outside hopes with a 6-2, 7-6(5) victory over Jan-Lennard Struff in the last match of the day.

The defending champion entered the week No. 18 in the Race with 1,885 points, but his victory moved him to No. 16 with 1,930 points as he continued a late-season charge in which del Potro has advanced to the semi-finals of both the US Open and the Shanghai Rolex Masters. He is in pursuit of his first title of the season, and his 20th overall.

The Argentine will next face seventh seed Yuichi Sugita, who battled past 2009 champion Marcos Baghdatis, 6-3, 3-6, 6-2.

With del Potro’s win, the top eight seeds advanced to the quarter-finals of an ATP World Tour event for the first time since the 2016 Garanti Koza Sofia Open. 

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Karen Khachanov will compete at the Next Gen ATP Finals next month, joining fellow Russian Andrey Rublev and Alexander Zverev of Germany at the inaugural event, to be held 7-11 November in Milan. Khachanov qualified based on results at ATP World Tour 250 events on Thursday.

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The 20-year-old Moscow native has received rave reviews from the tennis world this year, his second season on the ATP World Tour. The 6’6” right-hander has reminded longtime tennis fans and pundits of another big-hitting and quick-moving Russian, 6’4” Marat Safin, who reached No. 1 in the Emirates ATP Rankings and won 15 tour-level titles before retiring in November 2009.

Khachanov celebrated his first ATP World Tour title more than a year ago, at the Chengdu Open in China. He backed up his maiden crown this season, reaching four quarter-finals – Barcelona, Lyon, Bastad and Hamburg – and the semi-finals at the Gerry Weber Open in Halle (l. to Federer). Khachanov also performed well on the game’s biggest stages, reaching the fourth round at Roland Garros and the third round at Wimbledon. He also made the third round at the ATP World Tour Masters 1000 in Cincinnati in August (l. to Sugita).

With Khachanov, Rublev and Zverev qualified, four qualification spots now remain in the eight-player Next Gen ATP Finals. Seven of the eight spots will be determined by the Emirates ATP Race To Milan, which ends on 30 October. The eighth spot will be given to the winner of an Italian 21-and-under tournament.