Serena Williams has advanced to the third round of the Rogers Cup in Toronto, beating Elise Mertens 6-3, 6-3.
It’s her first match since losing the Wimbledon final last month.
The three-time champion will face Russian qualifier Ekaterina Alexandrova next.
Elsewhere, second seed Naomi Osaka advanced to the last-16 after her opponent Tatjana Maria retired due to injury.
Third seed Karolina Pliskova and Wimbledon champion Simona Halep are also through to the next round, but Caroline Wozniacki and Victoria Azarenka have crashed out.

India defeat Zimbabwe to revive T20 World Cup hopes
Auger-Aliassime sets Medvedev semifinal in Dubai
South Africa close in on T20 World Cup semis with win over West Indies
Real Madrid sink Benfica to reach Champions League last 16
PSG see off late Monaco surge to advance in Champions League
