Defending champion prevails 6-7 6-0 6-2 as he begins pursuit of returning to world number one.
All the information as the season-ending tour finals gets underway from The O2 Arena in London.
Novak Djokovic is bidding to end the year as world No.1 for the fifth time in London.
Djokovic lost his number one ranking to Andy Murray.
Wawrinka and Murray will be in action in the ATP World Tour Finals which starts on 13 November.
The Serbian was knocked off the no.1 spot for the first time in 122 weeks.
Murray has a tough draw ahead as he is in the same group along side Stanislas Wawrinka, Kei Nishikori and Marin Cilic.
Rafael Nadal cut short his 2016 season after the Shanghai Masters in October.
The newly installed world number one faces uphill task to remain at the ATP rankings summit.
Andy Murray was crowned world number one in men's singles after Paris Masters win.
Andy Murray was crowned world number one after making the finals of the Paris Masters
Novak Djokovic's 122-week run at the ATP rankings summit ended as Murray closes in on eighth 2016 title.
Murray is just one win away from becoming the new world no 1 in men's singles.
The 12-time Grand Slam champion slumps to a straight-sets defeat in Paris Masters quarter-finals.
Andy Murray beat Lucas Pouille in straight sets while Djokovic came through his game in three.
Djokovic needs to win 2 more matches to retain his No.1 world ranking.
Jamie Delgado has been accompanying Murray in Beijing, Shanghai, Vienna and Paris.
Djokovic will face Dimitrov in the third round of the 2016 Paris Masters on Thursday.
Murray won 6-3 6-7 (5-7) 7-5 in two hours and 29 minutes in the French capital.
Murray has an opportunity to beat Novak Djokovic to become the new world No 1.
Djokovic will face Muller in the 2016 Paris Masters on Wednesday.
Djokovic has won just one title after his French Open success in June.