Though Nadal won that 2009 encounter, leaving Federer in tears, the 35-year-old will still benefit from the quick speed of the Rod Laver Arena court. Expect him to attempt to control the baseline and move Nadal around, because any extended rallies will go in the Spaniard’s favor.
Compared to the last couple of years, during which Nadal’s best Grand Slam performance was reaching the quarterfinals at both the 2015 Australian Open and French Open, Nadal is now moving around the court more confidently and hitting out more aggressively with his forehand.
"It's a different time. A lot of time has gone by," Federer said. "I know this court allows me to play a certain game against Rafa that I cannot do on center court at the French Open."
Nadal won't have the slow clay to assist him on Sunday, so he'll bring his trademark fighting spirit, which saw him come back from two sets to one down against Alexander Zverev in the third round and which helped him close out his win on Friday against Dimitrov.
Though Nadal is five years younger than Federer, he will physically be at a disadvantage on Sunday after not only playing a longer semifinal but also having one less day off before the final.
"For me is fair enough," Nadal said about the scheduling. "Is true that if you play a match like I had today, probably is true that you are in disadvantage, yes. But that's a special situation, no? I cannot complain about that. I think is good."
Regardless of what happens, seeing Federer and Nadal on center stage again in Melbourne will reignite the world’s love for one of the greatest rivalries in sports who have given fans so many special moments, both on and off the court.