Sarah Loosemore (born 15 June 1971) is a retired professional tennis player from Wales. Loosemore was born in Cardiff to solicitor father John, and physiotherapist and tennis coach mother, Pam. She played on the WTA Tour from the late 1980s until mid 1990s, when she attended University. She was the youngest female British competitor in the main draw at Wimbledon at age 16 in 1988, where she got to the 2nd round. Before that she had played in numerous junior grand slams and won a number of junior National titles. In 1990, she reached the 3rd round of the Australian Open, (beaten by Helena Suková), her best performance in a Grand Slam event. She also defeated Hanna Mandlikova while representing Great Britain in The Hopman Cup. She was British Number 1 for some time and was the youngest winner of the National Championships, aged 17. She represented Great Britain in The Federation Cup and reached a career high WTA World ranking of 76, when she was 19 years of age. Loosemore left the tennis tour to study at the University of Oxford for a Psychology degree. There she met Chad Lion-Cachet, a Dutch international rugby player and Oxford University rugby captain. Post University, Loosemore qualified and worked as a solicitor, whilst still playing county level tennis. She married Lion-Cachet and had three sons.

WTA finals

Singles (1 runners-up)

ITF finals

Singles (1-1)

Doubles (1–0)

Grand Slams records

Singles

Final opponent on the right, l'ultime adversaire

Doubles

Fed Cup

She appeared in the Fed Cup in 1990, playing three singles matches and winning two.

World ranking