Heather Watson has taken over as the highest-ranked British woman, with four players inside the top 100 for the first time in over 20 years.
Watson rose to number 71 in the new WTA list announced on Monday - the first time she has led the quartet completed by Anne Keothavong (76), Laura Robson (91) and Elena Baltacha (100).
The last time Britain had four ladies inside the top 100 was on March 12, 1991 with Jo Durie (62), Sara Gomer (89), Sarah Loosemore (93) and Monique Javer (100).
The news caps a productive few days for 20-year-old Watson, who at the weekend captured the Bank of West Classic doubles title with partner Marina Erakovic.
Watson and Erakovic beat Vania King and Jarmila Gajdosova 7-5 7-6 (9/7).
Watson, Keothavong, Robson and Baltacha have all been named in the GB team for the Olympic Tennis Event at Wimbledon.
Watson and Keothavong are competing at the Mercury Insurance Open in Carlsbad, California this week, while Robson is participating in the Sony Swedish Open.