Heather Watson celebrated moving up to 71 in the world rankings and becoming the new British number one by claiming the first WTA Tour title of her career at Stanford.

The 20-year-old partnered the New Zealand player Marina Erakovic and despite being the outsiders according to the
tennis betting , they powered to victory against the top seeds Vania King and Jarmila Gajdosova in straight sets in the women’s doubles final of the Bank of the West Classic.

The duo had already beaten the second and third seeds on their way to the final, where they emerged victors 7-5 7-6.
Watson will represent Great Britain in the Olympics doubles event with Laura Robson but first will play in the Mercury Insurance Open in California.

Meanwhile, Serena Williams successfully defended her singles title by beating her fellow American Coco Vandeweghe 7-5 6-3.
The 30-year-old has now won as many singles titles as her sister Venus - 43 - a total that includes 14 Grand Slams, the last of which was at Wimbledon earlier this month.

Williams, who will now turn her attention to the Olympics, where she will be trying to clinch her third doubles gold medal with Venus, said after her Stanford success: "I definitely wanted to sustain my momentum, get better and build on what I did at Wimbledon.

"I didn't play my best tennis here, but I definitely survived, and I think mentally I was there. That really helped me out a lot. But I'm glad to be done with it, and to have actually won."

Vandeweghe, who entered the tournament ranked 120th in the world but has now jumped to 69, pushed Williams hard, particularly in the first set when she led 5-3 at one stage before eventually being overpowered.

We are in the midst of a busy summer of Tennis, with the Olympics providing us with a ‘fifth’ Grand Slam. Following the action in London we move on to Flushing Meadows and the US Open.