Roger Federer was left applauding a remarkable backhand volley on the stretch from Daniil Medvedev in his three-set win on Wednesday.
Needing to reach the last eight to add to her points tally for the WTA Finals, Kiki Bertens advanced to the second round of the Linz Open.
Despite suffering a recent run of poor form, two-time grand slam champion Garbine Muguruza outclassed Ana Bogdan in Hong Kong.
Alexander Zverev is closing in on an ATP Finals spot after winning in Shanghai, while Roger Federer also reached the third round.
After flash floods in his home island of Majorca, Rafael Nadal has opened the doors of his academy to those affected by the disaster.
In his first match since the US Open, Roger Federer defeated the in-form Daniil Medvedev in three sets at the Shanghai Masters.
Top seed Karolina Pliskova cannot qualify for the WTA Finals this week, but is on course to feature in Singapore.
Croatian Donna Vekic tumbled out of the Linz Open on Tuesday, the eighth seed winning just two games.
Seeds Elina Svitolina and Garbine Muguruza recorded straightforward victories on Tuesday to reach the last 16 in Hong Kong.
Seeds Dominic Thiem and Marin Cilic were surprise casualties at the Shanghai Masters as they crashed out at the round-of-32 stage.