Federer advances in China (image courtesy AFP)

Tennis great Roger Federer defeated unseeded Serbian Filip Krajinovic 6-2 4-6 6-4 on Tuesday to reach the last-16 at the Swiss Indoors in Basel.

But Federer struggled to control the match as he racked up 38 unforced errors.

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He, however, managed to do enough to progress.

Next up for him is Germany’s Jan-Lennard Struff, who defeated Australian John Millman 7-6(3) 6-2.