SHANGHAI (AP) — Roger Federer had to overcome a second-set stutter. Juan Martin del Potro and Alexander Zverev had to overcome illness.
All three still advanced at the Shanghai Masters on Wednesday.
Federer, the defending champion, beat Daniil Medvedev 6-4, 4-6, 6-4 in the second round despite being broken late in the second set.
“I was able to mix it up. Really also took some chances, serve and volley, second serve,” the top-seeded Federer said. “In the third set I really started to figure it out, as well, how aggressive or how tactical I wanted to make the match. And by trying everything, I found a solution at the end, which was a great feeling to have.”
The third-seeded del Potro trailed in the first set and in the tiebreaker but rebounded both times to beat Richard Gasquet 7-5, 7-6 (7).