Of course, it is not the positive thing, because it's better don't have injuries.
"It was a very quick match", said Nadal, who won his sixth title of the year in Beijing last week.
Nadal's resurgence after injury is one of the tennis storylines of 2017 along with the similar rejuvenation of old rival Roger Federer.
Andy Murray's former coach and former British player Petchey says it is doubtful but thinks Nadal is more willing to do so than Federer before their careers end.
Nadal, fresh off his victory at the China Open and having received a bye in the opening round in Shanghai due to being the top seed, started well against the American and continually improved throughout the encounter, dominating proceedings in a 6-2, 6-1 victory which took just 54 minutes. The final will be on Sunday if he can make it that far. "I'm used to playing 70, 90, 100 matches a season, so this year that's not the case", the 19-time men's singles Grand Slam victor explained.
Stolen truck explodes in fireball after crashing into four cars in Australia
The semi-trailer burst into flames after ploughing through other vehicles and part of a building, injuring eight people in total. Police said the truck was sighted driving erratically south along the highway, through Muswellbrook and towards Singleton.
The 56th-ranked Donaldson plans to celebrate his birthday by going to Disney Shanghai on Monday, before experiencing a first career meeting against No. 1 Rafael Nadal in the second round. "Of course finishing the year at No. 1 is something a little bit different", Nadal said, "And, yeah, if that happens, it will be a great achievement but there remains a lot to do and I need to play well".
"The best news for me is after many years I am still competitive", Nadal said, "I still enjoying tennis".
Unseeded Schwartzman began racking up the mistakes in the second set and Federer got an early break to put him into the next round. That's an important thing for me, and I feel lucky for that. So I hope that I will feel the benefit now while other guys are maybe getting a bit exhausted.
Federer defeated Diego Schwartzman 7-6 (4), 6-4, winning the match with his 14th ace on his second match point.