London: Former British number one Anne Keothavong announced her retirement from tennis on Wednesday.
Keothavong in 2009 became the first British woman to reach the world's top 50 for 16 years.
Her other major career high point came at the 2008 US Open, where she reached the third round, while she made the second round at Wimbledon four times.
But the 29-year-old, who made five WTA singles semi-finals, saw her progress hampered by two serious knee injuries.
She has endured a miserable season in 2013, with her ranking slumping to 285.
Keothavong, who reached a career-high ranking of 48 four years ago, has decided to go into media work and is joining BT Sport as part of their team to cover the WTA Tour.
"I have given my decision a lot of thought and I believe this is the right time to move on to the next stage of my career," said Keothavong, whose final match came at Wimbledon in a Centre court loss to Garbine Muguruza.
"I have had some magical moments along the way and I would like to thank my family for their unwavering support and encouragement."