Serena Williams eased to a 6-2 6-2 win over Anastasia Myskina in her first competitive match in six months at the WTA event in Cincinnati.
Williams was in majestic form
The 24-year-old had not played since the Australian Open in January because of a knee injury and her world ranking had slipped to 140.
The American returned with a bang with serves of about the 120-mph region that left Myskina flapping on occasions.
Williams broke three times in the first set and repeated the feat in the next.
"I felt really relaxed," said Williams. "I haven't felt this way in a long time."
"I almost could have played Wimbledon," she added.
"I was about 60 or 70% then. But I probably would have had an embarrassing loss."
Williams said that the power of her own service shocked her.
"I was surprised myself, because I wasn't serving that well in practice," said the American.
She added that her aim was to rise up from the relatively disappointing ranking of 140th in the world.
"It's devastating," said the former world number one. "But I have no pressure on me. I have nowhere to go but up."