Former world number five Rainer Schuttler says the legacy of Roger Federer is safe even if he loses matches after his injury.
Federer has not played for over a year now after requiring double knee surgery on a long-standing issue.
He will be back on court in Doha next week, though, and is also expected to play Dubai before taking a 'training break' to assess his fitness ahead of the clay season.
"What Roger has achieved and achieved in his career will always remain outstanding," Schuttler told Eurosport.
"He has broken so many records and won tournaments that a few defeats would not change that."
Schuttler has likened this situation to that in 2016, when Federer missed all of 2016 due to injury and won two of the four Grand Slams after returning.
That was four years ago, and it will obviously be much harder to repeat as a 39-year-old.
However, Schuttler says no one should be underestimating how well Federer looks after himself.
"Roger organizes his tournament schedule and his return to the tour very meticulously and precisely," Schuttler said.
"Even after his last injury break, Roger showed that a longer break can be expected.
"He has so much experience and knows his body extremely well."
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