Grass season is back, and tennis stars are in a race against time on the slipperiest surface

The grass-court tennis season has begun at Queen's Club in London, with players having less than a week to adapt after the French Open and just three weeks before Wimbledon. The tournament features both men's and women's competitions, with 19-year-old Victoria Mboko set to partner a returning 44-year-old Serena Williams in doubles. Defending Queen's women's champion Tatjana Maria is among those competing on the surface, which receives only about four weeks of play annually on the professional tour.