Croatian Ivan Ljubicic grabbed the last ticket to the eight-strong Masters Cup on Friday.
The world number three will meet Slovakian 16th seed Dominik Hrbaty in the third round of the Paris Masters.
The Argentine ace would have made sure of a berth in the year-end Masters Cup in Shanghai had he not lost to Czech Tomas Berdych.
Argentine Guillermo Coria and Russia's Nikolay Davydenko are front-runners for the last two slots at the end-of-season Masters Cup.
World No 5 Rafael Nadal has ruled out joining forces with Indian tennis great Leander Paes 'anytime soon', insisting that he is focusing entirely on the singles event.
Novak Djokovic is only the 12th - third among active - player in the Open Era (since 1968) to win the 700 career singles matches.
Following his title win at the Traralgon Challenger event, Indian tennis player Yuki Bhambri leapfrogged 73 places to 204 in the singles rankings on Monday even as Rohan Bopanna dropped out of the top-10 in the doubles chart.
The Indo-Belarussian pair beat Andrei Pavel of Romania and Nenad Zimonjic of Serbia Monetnegro in straight sets in the first round of the Paris Masters.
The world number four said that he has yet to fully recover from a ligament tear in his left knee.
The 36-year-old was given a thorough workout by Sock although had he been a little more clinical the scoreline would have been more heavily-weighted in his favour.
The unseeded Henman beat Wimbledon champion Roger Federer while Roddick beat Jonas Bjorkman in the Paris Masters.
Just as against Swiss 20-time Grand Slam champion Federer in Saturday's semi-final, the 21-year-old produced a dashing display of power and guile to stun the in-form Djokovic 6-4, 6-3.
Tim Henman capped the finest week of his tennis career by winning the Paris Masters title with a straight sets defeat of Andrei Pavel.
The Briton inflicted the American his first defeat since he became world No. 1, winning their Paris Masters semi-final.\n\n
The Australian wasted five match points and a chance to play in the season-ending Masters Cup when he was beaten 6-7, 7-6, 7-6 by Gustavo Kuerten.
The first player to win a Grand Slam, the ATP World Tour Finals, the men's singles at the Olympic Games and a Masters title in the same calendar year.
There is no let-up for Roger Federer as he prepares for his 12th consecutive appearance at the ATP's season-ending extravaganza.
Grigor Dimitrov stood one win away from the biggest title of his career on Saturday after ending his Jack Sock jinx to reach the final of the season-ending ATP Finals at the 02 Arena.
John Isner pushed on towards a Tour finals spot on Friday when he made it through to the semi-finals of the Paris Masters with a 6-4, 6-7(5), 6-4 win over Argentine Juan Martin Del Potro as the tournament was hit by the withdrawal of Rafael Nadal.
Roger Federer's late bid to secure his customary place in the season-ending ATP World Tour finals began with a routine opening round win over Adrian Mannarino in his home town tournament in Basel on Monday.
Djokovic had his personal best winning sequence of 30 consecutive sets ended as Cilic played almost flawlessly aggressive tennis to draw first blood in a magnificent duel.
Novak Djokovic destroyed a woeful Stefanos Tsitsipas 6-1, 6-2 to book his place in the semi-finals of the Paris Masters.
Novak Djokovic has denied an Italian media report he deliberately lost a match in 2007 that has been linked to a wider scandal involving alleged corruption in tennis. The 28-year-old world number one, who easily beat French teenager Quentin Halys on Wednesday to advance to the Australian Open third round, was asked about a report in Italian newspaper Tuttosport that he had deliberately lost to now-retired French player Fabrice Santoro at the Paris Masters. "It's not true," the Serb said with a shrug and shake of his head. "What it is to say? I've lost that match. "Anybody can create a story about that match or for that matter any of the matches of the top players losing in the early rounds, I think it's just absurd." "You can pick any match that you like that the top player lost and just create a story out of it."
For all his renowned mental strength it was psychological exhaustion that made Rafael Nadal consider skipping the season-ending ATP World Tour finals this year, the 14-times grand slam champion said on Tuesday.
The 16-times Grand Slam champion, who has been slightly ill lately, was kept on his toes before racing to victory to set up a meeting with seventh seed Stefanos Tsitsipas.
Take a look at six of the up-and-comers who could upset the top names at the year's first Grand Slam.
Roger Federer says he does not regret passing up the chance to topple great rival Rafael Nadal from the top of the world rankings at the ATP Finals in London this week.
After four months away from the courts following a doping ban, Marin Cilic felt like a kid playing for the first time at the Paris Masters on Monday.
Roger Federer ended Grigor Dimitrov's seven-match winning streak and showed the Bulgarian he has some way to go to live up to his 'Baby Federer' tag with a 6-3 7-6 (2) quarter-final victory at the Basel Open on Friday.
Novak Djokovic began his challenge for a hat-trick of ATP World Tour Finals triumphs in London with a 6-1, 6-1 demolition of Croatia's Marin Cilic.
Andy Murray is performing a delicate balancing act as he prepares for a claycourt Davis Cup final and the ATP World Tour Finals on an indoor hardcourt at the O2 Arena.