• Paula Radcliffe won the 2007 New York marathon 10 months after giving birth to daughter Isla
• Kim Clijsters triumphed at tennis' US Open in 2009 to become only the third mother to win a Grand Slam
• Catriona Matthew was golf's Open champion in 2009 at the age of 40, 11 weeks after giving birth to youngest daughter Sophie
• Liz McColgan returned to athletics after giving birth to her first child, Eilish, and won 10,000m gold at the 1991 World Championships
• Thirty-year-old mother of two Fanny Blankers-Koen won gold in the 100m, 200m, 4x100m relay and 80m hurdles at the 1948 Olympics in London