But he roared past the competition at Roland Garros before landing his 16th Slam in NY and he will now look to end his season on a high in Paris-Bercy before heading to London for the ATP World Tour Finals.
"It was impossible for me to think about (being No. 1) coming back from a tough period without playing, and with so many injuries in the last couple of years", said Nadal, who also finished as No. 1 in '08 and '10.
Nadal's fourth finish atop the ATP rankings makes him the seventh man to accomplish the feat.
It has been a stunning year for the 31-year-old, who won the French Open for the tenth time, as well as winning the US Open and reaching the final of the Australian Open.
"It has been an incredible year".
"And missing this tournament Bercy that I love, which is played in a city that I love too, costs me a lot".
But with Federer forced to withdraw from Paris, Nadal needed just one more win to finish as number one.
Federer has beaten Nadal in four consecutive matches and the 19-time major singles champion was in outside contention for the number one ranking before pulling out of Paris to focus on the season-ending ATP Finals in London next week.
The 21-year-old Chung put up a courageous fight at the Bercy Arena, but a fired-up Nadal proved too hot to handle.
Chung broke Nadal back in the ninth game of the first set and held for 5-5. The Majorquain will play Pablo Cuevas in the knockout stages.
Earlier on Wednesday, fourth seed Alexander Zverev was dumped out by Dutchman Robin Haase in a 3-6, 6-2, 6-2 second-round defeat. During that stretch, Nadal also won two Masters 1000 crowns (Monte Carlo and Madrid), as well as the 500-level tournament in Barcelona.
Bulgarian world number eight Grigor Dimitrov, who has already booked his ticket for the Tour Finals, knocked out French favourite Richard Gasquet with a straightforward 6-4, 6-4 win.
Frenchman Lucas Pouille kept alive his slim chances of qualifying for London with a 6-3, 6-4 win against Feliciano Lopez, but No. 12 Kevin Anderson's chances took a dent after a 5-7, 6-4, 7-5 loss to Spaniard Fernando Verdasco.
Police said earlier a suicide auto bomb had been rammed into a hotel and a former government building had been attacked. The Somali government blamed the October 14 blast on al-Shabab, but no group has claimed responsibility.
Raja on Thursday asked the Government about the record of black money recovered after demonetisation. He claimed that 18 opposition parties would be protesting in their own respective ways in all states.
If there were to be a new Smash title in the future, it would certainly be a good idea to have the controller support ready. To use a GameCube controller , simply connect it to the Switch's dock and pair it by hitting your L and R buttons.
The president's national health emergency declaration opens certain federal funds to drug treatment groups, among other things. Unused prescription drugs are a major safety issue that can lead to abuse or death from an overdose or accidental poisoning.
All were running computer systems - the majority Windows 7 - that had not been updated to secure them against such attacks. Last may, several NHS hospitals were hit by the global WannaCry ransomware attack.
He also quoted a recent International Monetary Fund report that projected India will achieve an eight per cent growth rate soon. Jaitley also hit out at the Congress over its plans to observe the day because the demonetisation decision was "ill conceived".
Poor mental health causes up to 300,000 people to leave their jobs every year, according to a review called " Thriving at Work ". Under the Equality Act (2010), your employer has a legal duty to make "reasonable adjustments" to your work.
In response to the figures Chancellor Phillip Hammond said: "The UK economy is successful and resilient". Manufacturing also boosted the economy with an improved performance after a weak second quarter.
The United States and North Korea have always been engaged in back-and-forth barbs over the latter's threat of a nuclear attack. The U.S. wants North Korea to understand that there is a "different path it can choose", Choi said.
The weather service also expects some damage to trees and power lines, thus anticipating power outages scattered across the area. Winds turning back out of the south look to bring in milder air so high temperatures should climb back into the mid 60s.
Fultz was drafted first overall in this year's NBA Draft and becomes just another Sixers rookie to miss time due to injury. There did appear to be a hitch in his shot during preseason games, but Fultz has never been a spectacular shooter.
Bloodhound SSC is created to reach 1,000mph in a bid to set a record that can not be beaten by existing technology. In 1997, Andy was the driver for the Thrust SSC team as they set the current record of 763mph.
Kelvin Benjamin traded to Buffalo Bills
He was solid last season, finishing the year with 63 catches for 941 yards, and he was on a similar pace this season. Carolina, at 5-3, is a surprising trade-deadline seller, and linebacker Thomas Davis didn't seem thrilled.
Starbucks' new holiday cups are DIY-style
Starbucks' holiday cups returned to stores on Wednesday, November 1 - and for the first time ever, they aren't red . With all of the empty space, you can DIY the hell out of the cup and make your own adorable creation.
Trump Tweets Feelings About Russia Investigation
Congressional committees have now launched investigations into what happened, and why the Uranium One deal was not stopped. In addition to Mueller's probe, three committees on Capitol Hill are conducting their own investigations.
FIFA Under-17 WC: Its England vs Spain in Finale
Hudson-Odoi clipped the ball across the penalty area from the left, and Brewster turned it goalwards from point-blank range. The striker, from just six yards out from goal, sent a tame header trickling wide, not even hitting the target.
GM's earnings beat, forecast lift shares; supply glut shrinks
Additionally General Motors Company recently announced a dividend for shareholders which was paid on Friday September 22nd, 2017. Eagle Management Ltd Limited Liability Company has invested 2.43% of its portfolio in General Motors Company (NYSE:GM).
George Clooney's "Twins" Make TV Debut on 'Jimmy Kimmel Live!'
Damon, who worked closely with Weinstein on movies such as Good Will Hunting , says working with the Weinstein was "intimidating". Paltrow is one of dozens of actresses who've come forward in recent weeks with stories of sexual misconduct involving Weinstein.