Rafael Nadal said on Monday that he is ready to consolidate his year-end number one ATP ranking by winning his opening match at the Paris Masters.
This result sees Nadal progress to the last 16, but more importantly for the Spaniard, finish the year as the number one for the fourth time.
Nadal has finished the calendar year as number one in three previous years, 2008, 2010 and 2013.
"I'm very, very happy for everything", Nadal told Sky Sports.
But Nadal emerged victorious after Federer was forced to withdraw from the tournament in Paris, which as a technicality meant that Nadal had to secure just one win to sit in the top spot.
'I'm happy to achieve the year-end world No. 1 here in Paris'.
"And missing this tournament Bercy that I love, which is played in a city that I love too, costs me a lot". It has been an awesome year.
After breaks were exchanged in the early stages, Nadal then rallied from a 0/40 deficit before breaking Chung to lead 4-2.
The Spanish superstar wins his opener at the Paris Masters against Hyeon Chung of South Korea.
The young Korean had a break point for 6-5 but Nadal's serve helped him get out of trouble and he pulled away from a tiring Chung at the end to claim victory after an hour and 48 minutes.
The Spaniard will face Uruguayan Pablo Cuevas in the round of 16 as he attempts to win another title this year.
Home hope Lucas Pouille kept his slim hopes of qualifying for the World Tour Finals alive by seeing off Spaniard Feliciano Lopez 6-3, 6-4.
Also, fourth-seeded Alexander Zverev lost to Robin Haase 3-6 6-2 6-2, and ninth seed John Isner beat Diego Schwartzman 7-6 (7-2) 6-7 (13-11) 6-3.
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.