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.

Dave Rennie becomes first Pacific Islander to lead All Blacks
FIFA offering $12 tickets to World Cup Play-Off Tournament
Resurgent Wolves stun Liverpool, Everton enjoy home comfort
Real Madrid's Rodrygo to miss World Cup for Brazil
Getafe stuns Real Madrid to shake up LaLiga title race
