Nadal and Federer are back at the top of tennis after some time in the background.
And after a clean sweep of the Grand Slams between them this year they have stepped up again in Shanghai.
Nadal, world No1, came into the week having won in Beijing at the China Open last week.
And the Spaniard has roared through this week beating Marin Cilic in the semi-final yesterday.
Federer dispatched Juan Martin Del Potro in a three-setter to set up the blockbuster final.
Rafael Nadal vs Rogers Federer: What time is it?
Rafael Nadal vs Roger Federer: Five facts about the pair
Rafael Nadal vs Roger Federer LIVE updates
Federer on Nadal
08.20: Federer admits Nadal helped him become a better player because he had to change and adapt things from his game to keep ahead.
“I don’t want to thank him for that, but he made me maybe rework my game and go back to the practice courts and think about what I could change maybe to become a better player,” Federer said.
“I think for that I’m happy about the losses I took. Took them on the chin and kept moving forward.
“It’s nice at this late stage of the career that we still have these matches going on.”
08.00: Nadal leads the head-to-head 34-14 but Federer has won the last four meetings between these two.
Both are indisputably greats in the sport and could go down as the greatest ever players.
Federer is closing in on 100 titles and hopes to secure more this season before wrapping up.
Today gives him the opportunity with most pundits giving him the slight edge.
Greg Rusedski thinks if the roof is closed Federer is in the driving seat.
And Juan Martin del Potro thinks the court benefits Federer.
Nadal though has come into his own and has cranked up a level or two over the last few months.
7.45: Welcome to our coverage of the Shanghai Masters final between Rafael Nadal and Roger Federer.
This is all set to be a thriller after a great week of tennis.
Federer has won the last four meetings between these two but Nadal has gone up another level over the last few months.
He won the US Open in spectacular fashion and has risen to No1 in the world again.
Both men will feel they have the edge making it another fascinating match up.
Stay tuned for it here.