Serena Williams claimed her first singles win in 14 months as she beat Spain's Nuria Parrizas Diaz to reach the second round of the National Bank Open in Toronto.
Williams' last singles success was at the 2021 French Open.
She will play either Olympic gold medallist Belinda Bencic or Tereza Martincova next.
Williams made her singles return at Wimbledon in June after a year out with injury.
A three-time champion at the Toronto event, she was given warm and vocal support by the crowd in her first hard court match since the 2021 Australian Open.