If the rest of this year's Wimbledon ladies' matches were won by the higher-ranked player, Laura Robson would be faced with the following route to the Championship:
- Fourth round: Kaia Kanepi (Estonia, world rank 46)
- Quarter-final: Serena Williams (USA, 1)
- Semi-final: Agnieszka Radwanska (Poland, 4)
- Final: Na Li (China, 6)
Britain's Laura Robson fought back from a break down in the second set to level her third round match against New Zealand's Marina Erakovic at one set all.
The pair now enter a deciding set.
Laura Robson has said she is "really excited" about her third round match tomorrow against New Zealander Marina Erakovic.
Describing her second round victory as a "big win", the 19-year-old said:
"It was a great atmosphere out there today and the roof being closed makes it louder.
"I was kind of just feeling nervous but then I thought she is probably even more nervous because I've played on centre a couple of times before."
Robson is in action again later this afternoon when she plays a doubles match with partner Lisa Raymond.
Britain's Laura Robson has stormed into the third round of Wimbledon with victory over Mariana Duque-Marino.
The 19-year-old British number one defeated the Colombian 6-4, 6-1 in less than 90 minutes on Centre Court.
Wimbledon organisers have reassured tennis fans that play will go ahead on day five of the tournament despite the wet weather.
Morning! Yes it's raining, but we're promised drier weather as the day goes on. We have a roof, and play will go on! http://t.co/ZpZnvJHoI9
Fans should see both British hopefuls in action with Laura Robson and Andy Murray both scheduled to play on Centre Court.
Robson faces Colombia's Mariana Duque-Marino in her second round match which is due first on Centre Court while Murray takes on Spanish player Tommy Robredo later this evening.
A Labour peer has criticised the Lawn Tennis Association over its "poor legacy", claiming it should not take any credit for British success in the sport.
Baroness Billingham, president of the Oxfordshire Lawn Tennis Association, said the national organisation had played no part in the success of British stars Andy Murray and Laura Robson.
Following the LTA's claim to a House of Lords committee that increasing participation was "at the heart of what we do", Billingham said:
"I don't think you have increased participation. I don't think you can claim accreditation for Andy Murray and Laura because they came from outside the system.
"I have to say that my view is shared by Sport England, who have cut your funding because they think you are inadequate and, indeed, by the sports minister. Having, in my view, a very poor legacy."
Laura Robson's mother missed her first round win at Wimbledon - because she was unable to get a dogsitter at their home in Greece.
But the teenager was supported by her brother Nicholas, 21, who is working as a court attendant at the Championships. He was allowed to watch her match from the sidelines.
Miss Robson said her mother Kathy kept in regular contact over the phone while she looked after the black labradors, Ella and Kiri. She said: "I haven't spoken to her on the phone but I've texted her.
"She always texts me back during the matches, as well.
"So when I get off the court, I've got like eight messages to read, generally about catching the ball toss.
"She's obviously pretty excited. But I've got the rest of my family here. All my relatives are watching in Australia. So, yeah, they're very happy."
Laura Robson has said that today's win against Russia's Maria Kirilenko was "a big one".
Speaking after the match, she said: "It was a really big one for me. Although I like grass, I've never really done overly well here.
"It was a big one for me - it was good that I managed to tough it out after I got so nervous in the second set. I'm happy."
The Prime Minister has tweeted his congratulations to Laura Robson after became the first British woman to beat a top 10 player at Wimbledon since 1998:
The Brit defeated the Russian 6-3, 6-4.
Laura Robson has become the first British woman to beat a top 10 player at Wimbledon since Sam Smith, in 1998.