Andy Murray and Novak Djokovic entered the ATP World Tour Finals in London with the #1 ranking at stake for the two runaway best players in men's tennis this season. Murray, ranked #1 for the first time in his career two weeks ago, continued his blitzing form since the U.S. Open, winning his fifth consecutive tournament to secure the year-end top ranking. Murray finishes 630 points clear of Djokovic at #2 and a whopping 6,960 points ahead of Milos Raonic at world #3.

#ThisWeekInTennis recaps the previous week's tennis action through news reports, player tweets, press snippets, tennis writing, rankings, and podcasts.

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• Andy Murray finished his 2016 campaign in style, capturing the ATP World Tour Finals to secure the year-end number one ranking. The win capped a stellar second half of the season for Murray, winning Wimbledon, Olympic gold, Beijing, Shanghai, Vienna, Paris, and now London. 
• Novak Djokovic showed glimpses of his 2016 best form at the ATP World Tour Finals but was unable to clinch the year-end #1 ranking, losing in straight sets to Andy Murray in the final. 
• Milos Raonic finsihes 2016 ranked world #3. The Wimbledon finalist lost a three-and-a-half hour semifinal to Andy Murray and also took Novak Djokovic to two tiebreaks in round robin play.
• Year-end top 10: 1) Murray 2) Djokovic 3) Raonic 4) Wawrinka 5) Nishikori 6) Cilic 7) Monfils 8) Thiem 9) Nadal 10) Berdych. 
• Jamie Murray and Bruno Soares finish the year as the top ranked doubles team on the ATP Tour. 
• Henri Kontinen and John Peers captured the year-end doubles crown at the ATP World Tour Finals. 
• Roberta Vinci and Francesca Schiavone both confirmed they will continue to play on the WTA Tour in 2017.
• Venus & Serena Williams had courts in Compton, California dedicated in their honour. The sisters also announced the Yetunde Price Resource Center. 
• ​Angelique Kerber celebrated her career-best season by having lunch with U.S. President, Barack Obama.
• Ekaterina Alexandrova beat Caroline Garcia to win the Limoges title.
• The ATP Tour announced a ‘Next Gen’ finals for 21-and-under players beginning in 2017.
• After the best season of her career, Karolina Pliskova splits with coach Jiri Vanek.
• Amelie Mauresmo steps down as France's Fed Cup captain, is pregnant with second child.
• ​The Czech women won the Fed Cup tournament for the fifth time in six years and third consecutive year.
• ​The final tennis event of the season is on deck as Argentina battles Croatia for the Davis Cup title.

Andy Murray had another big week on the ATP Tour. Coming off consecutive wins in Beijing, Shanghai, and Vienna, Murray won again in Paris. More importantly, Murray ascends to #1 in the world rankings, supplanting Novak Djokovic as the top ranked men's player. Elsewhere, Petra Kvitova won the WTA Elite Trophy event in Zhuhai going unbeaten in her four matches without dropping a set. 

For these and other stories, #ThisWeekInTennis recaps last week's tennis action through news reports, player tweets, tennis writing, rankings, and podcasts.

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• Andy Murray is the new ATP Tour world #1. Murray becomes the 26th player to hold the top ranking the same week that he claimed his 14th career Masters title. The tournament win was Murray's eighth on the year and fourth in as many starts. 
• Novak Djokovic ceded his top ranking to Andy Murray after the Paris Indoor Masters event. This week marks the first time since July 7, 2014 that someone other than Djokovic sits atop the ATP Tour rankings. 
• Petra Kvitova closed her 2016 season in style by winning the WTA Elite Trophy event in Zhuhai. Kvitova enjoyed a successful Asian Swing winning both Zhuhai and Wuhan, while also making the quarterfinals in Beijing. The Czhech player will end the season ranked #11.
• Elina Svitolina capped a solid stretch after the U.S. Open with a run to the finals in Zhuhai (SF-Tokyo, SF-Beijing, SF-Moscow).
• John Isner rises nine places in the ATP rankings to #19 after reaching the final of BNP Paribas Masters in Paris. Isner is once more the top ranked American. 
• Johanna Konta secured a year-end top ten ranking with her opening match win over Sam Stosur in Zhuhai. Konta, who ended 2015 ranked #46, will begin the 2017 season as the world #10. 
• Reilly Opelka won his first career Challenger title in Charlottesville.
• Roger Federer (#16) exits the ATP top 10 for the first time since 2002.
• David Ferrer (#21) falls out of the ATP top 20 for the first time since July, 2009. 
• Gael Monfils heads into the season-ending event in London boosted by reaching a career high ranking at #6. 
• As per Todd Woodbridge, Nick Kyrgios has completed his three-week suspension from the ATP Tour.
• Steffi Graf made a rare appearance on the tennis circuit in her capacity as ambassador at the Zhuhai Elite Trophy event in Zhuhai
• The draw for the ATP World Tour Finals in London is out. The eight-man field is divided into two groups; the McEnroe group features Murray, Wawrinka, Nishikori, and Cilic, while the Lendl group consists of Djokovic, Raonic, Thiem, and Monfils. 
• However, Milos Raonic is doubtful to participate after suffering a right quadriceps injury. If he is unable to compete, Tomas Berdych is next in line to take his place. Rafael Nadal, who qualified at #8, will not participate. 

Dominika Cibulkova and Andy Murray were the big winners in tennis last week. Cibulkova scored the biggest title of her career when she beat Angelique Kerber in the finals of the WTA year-end event in Singapore. With the win, Cibulkova rises to a career high #5 ranking. Meanwhile, Andy Murray kept his win streak alive (16 matches and counting) with yet another title, this time in Vienna. The world #2 now sports a 69-9 record on the year having hoisted seven trophies.  

As the 2016 tennis season heads towards the finish line, take a look back at the last week of action with #ThisWeekInTennis, recapping the action through news reports, press snippets, player tweets, tennis writing, rankings, and podcasts.

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• ​Dominika Cibulkova won the WTA Finals in Singapore for the biggest title of her career. Apart from a new career high ranking at #5, Cibulkova finishes the year having won the most WTA singles titles of any player (four). Her seven finals on the year is second only to world #1, Angelique Kerber.
• Andy Murray won the third consecutive event in which he's entered, this time claiming the title in Vienna, Austria. The Andy Murray #1 ranking watch is officially on as the Brit has a chance of finally claiming the top ranking this week in Paris.
• Marin Cilic boosted his chances of qualifying for the ATP World Tour Finals by winning last week in Basel. He moves to #9 in the Race to London after beating Kei Nishikori 6-1 7-6. The title was also the first ATP 500 crown of Cilic's career. 
• Jo-Wilfried Tsonga made the finals in Vienna before losing to Andy Murray. The Frenchman also announced he will become a father in the new year. 
• Svetlana Kuznetsova had herself a banner two weeks. After winning in Moscow to qualify for the WTA Finals at the last minute, Kuznetsova reached the semifinals of the year-end event, and got a lot of media attention when she gave herself a haircut mid-match against Radwanska.
• Ekaterina Makarova and Elena Vesnina won the doubles title at the WTA Finals in Singapore. The pair also took Olympic gold in Rio. 
• Sania Mirza and Martina Hingis returned as a doubles team at the WTA Finals, bowing out in the semifinals. While the pair were unable to defend their title from a year ago, Mirza will end 2016 as the #1 ranked doubles player on the WTA Tour. 
• Nick Kyrgios has agreed to receive treatment from a sports psychologist in order to reduce his suspension from the ATP Tour.
• Jack Sock and Marcel Granollers  teamed to win the doubles event in Basel. Sock, whose singles results have been on the uptick lately (final in Stockholm, quarters in Shanghai), has been even better in doubles; he's made the final of his last three events, winning two. 
• Both Serena and Venus Williams have been confirmed for the 2017 edition of the ASB Classic in Auckland to start the year.
• WTA year-end top 10 is settled: 1) Kerber 2) Williams 3) Radwanska 4) Halep 5) Cibulkova 6) Pliskova 7) Muguruza 8) Keys 9) Kuznetsova 10) Konta