Guernsey's Heather Watson has regained her status as Britain's top women's tennis player after her impressive recent run of form took her to number 69 in the world.
The 22-year-old enjoyed a nine-match winning streak after winning the Prague Open and then coming through qualifying to reach the second round at the French Open.
Watson jumped 23 places to move ahead of Laura Robson, who is ranked at 80 in the world, while Joanna Konta is number 110.
She has been as high as 39 in the rankings, but a spell on the sidelines with glandular fever followed by a poor run of form saw her plummet to third among her fellow Brits last year.
Meanwhile, French Open winner Maria Sharapova moved up three places to fifth in the world.
Simona Halep, the runner-up at Roland Garros who beat Watson in the second round, moved up a single place to a career-high third in the rankings behind Serena Williams and Li Na.