Serena Williams showed she has made a full recovery from recent health issues by beating Angelique Kerber 7-6, 6-3 in the final of the Stanford Classic.
Williams, playing in her first tournament since being forced to retire from a Wimbledon doubles match because of a viral infection, took the Stanford crown for a third time and won her fourth title overall this season.
Her return to fitness has come at just the right time with the US Open set to start on August 25.
"I have a lot of confidence going but every week is a new week and hopefully I can just try to improve," Williams, who also took the title in 2011 and 2012, told reporters.
Her latest victory was far from easy as Williams had her service broken twice in the opening set and fell behind 5-1.
The 17-times grand slam champion rallied to tie the score and eventually dominate the tiebreaker 7-1.
"I blinked my eye and I was down 1-5 and Angelique was playing so well," the 32-year-old said. "I tried to relax and just think about making my shots."
Kerber was looking for her first singles crown of the season but instead lost her fourth final of 2014.
"I gave everything I could out there," Kerber said. "When she was down she started hitting the ball better. It's a special thing she has."