Laura Robson, the 14-year-old Briton who captured the hearts of the nation by winning the Wimbledon girls' singles title, was catapulted into the top five of the world junior rankings yesterday on the back of her triumph. Robson, the youngest champion since Martina Hingis lifted the trophy at the age of 13 in 1994, leapt from No36 to No5 in the ITF's latest under-18 rankings.

The teenager, who was born in Melbourne and is the youngest girl in the top 100, has little to fear in striking for higher ground. At Wimbledon she defeated Melanie Oudin, the No1 seed, and Noppawan Lertcheewakarn, the No3 seed, the occupants of the third and fourth spots in the world rankings, on her way to the title.

The development came as Robson's management enforced a news blackout on the teenager, in an attempt to take her out of the limelight and focus on developing her game. Whereas past Wimbledon junior champions have cashed in on their success and boosted their public profile, those close to Robson are adamant that the media will not be allowed access to her until the Australian Open in January.

Abi Tordoff, her agent, said: “She's very young. There's plenty of time for her to do more with the media, and publicly, but when she's older. It's important that she's allowed to develop, not only as a player but as a person. She's a very mature girl and it's nice to see that she has a very level head, but we just want to allow her some space.”

Robson's natural charm and glowing visage have sparked vast interest in her not only as a potential world-beater, but also as a bankable commodity. Carl Maes, the head of women's tennis at the LTA, believes that she could be earning £5million a year from tennis by the age of 25, while Max Clifford, the publicist, said that she could make £500,000 in commercial earnings this year alone.

While the sums remain hypothetical, the precocity of Robson is clear. Journalists at Wimbledon entered her press conferences expecting to find a meek young girl; instead they were met by a confident young woman.

There had been discussions among the press corps as to where the limits of propriety stood when questioning the teenager. Was it too coarse, for example, to ask a 14-year-old if she had a boyfriend? In the event, Robson proved equal to all that was thrown at her. Answering a question about whether she had an eye on a companion to accompany her to the Champions' Dinner, she shot back: “No, apart from [Marat] Safin.”

The 28-year-old Russian politely declined the request. Instead, her chaperones for the event on Sunday evening were Tordoff and Martijn Bok, a Dutchman, who is her coach. The day was even more frenetic than that of her victory, with Robson making a number of visits to Elisabeth Piner, the designer, whose firm is charged with dressing the guests. Despite initially plumping for a white chiffon number from Piner's racks, Robson eventually found her little black dress elsewhere, although Piner's team applied her make-up and styled her hair.

Robson hopes to compete in money tournaments on the Continent before the World Team Championships in the Czech Republic next month. By convention, her victory in SW19 should entitle her to a wild card into the women's draw next year, but that is a distant dream. “I'll be back to my training and I want to play more junior tournaments, but I'll be adding some senior tournaments, too,” she said. “But I still have to do my homework. It's maths this weekend - algebra, which is not nice.”