Deposed Wimbledon champion Serena Williams has slumped 150 places in the world women's tennis rankings to 175th - her lowest position since 1997.
The 29-year-old American only recently returned from injury and illness and was beaten ny Marion Bartoli in the 4th round at the All England Club.
Caroline Wozniacki stays at the top of the rankings, while Wimbledon champion Petra Kvitova climbs one to seventh.
In the men's rankings, Wimbledon champion Novak Djokovic has become the 25th man to take the world number one spot, ahead of Rafael Nadal, Roger Federer and Andy Murray.
Jo-Wilfred Tsonga is up five places to 14th after his run to the semi-finals, while Australian teenager Bernard Tomic, beaten by Djokovic in the last eight, climbs 87 places to a career-high ranking of 71st.