Roger Federer has admitted career rival Novak Djokovic could surpass his all-time Grand Slam records, which is seemingly inevitable considering the Serb's dominance in the past seasons.
Following his masterful win at the French Open, Djokovic is just two major titles away from completing a calendar Grand Slam as the world No. 1 looms as the presumptive favorite to win Wimbledon and the US Open. Federer believes Djokovic can achieve such feat, subsequently eclipsing his all-time record of 17 Grand Slam singles titles.
"Everything is possible, he can complete the calendar Grand Slam as well even if tournaments are different, but he is the big favourite for the next two events [Wimbledon and US Open]," Federer said, report Tennis World USA.
"He has a good chance, it's important to stay free-injury, be always motivated and keep fighting."
Djokovic, who won four of the last five Grand Slam events, will have a chance to close out a calendar sweep when he hits the grass-court in Wimbledon later this month. Identical to Djokovic's routine in the last five years, he will not play a single lead-up tournament heading to Church Road, getting up some rest for the third Grand Slam event of the year.
The Belgrade native also has a chance to be the first men's tennis player to achieve a Golden Slam, a feat only German Steffi Graf has achieved in 1988, if he could win at the 2016 Rio Olympics in Brazil, which kicks off in August.
Meanwhile, Federer attempts to break his losing slump this season at the Gerry Weber Open in Halle, where he guns for a fourth-straight title at the tournament.
The 34-year-old has had a rough start to the season because of setbacks and injuries that kept him from winning a single title this year. But after coming off a back injury that kept him from competing at the French Open, and despite losing to Dominic Thiem in Stuttgart, Federer feels he is back to his old-dangerous self again.
"I don't want to get too carried away, but I feel like if I serve the way I did today and I'm able to step it up just a little bit on the return from the baseline, all of a sudden I'm dangerous for anybody," Federer said, reports the Tennis Magazine.
Federer is certainly coming back to his pre-injury form defeating Jan-Lennard Struff and Malek Jaziri in the first two rounds of the Gerry Weber Open without dropping a set. The Basel native next faces David Goffin, whom Federer has defeated in all four of their career head-to-head matchups.