American Sloane Stephens celebrates after beating Estonia's Anett Kontaveit in Paris yesterday. Pic/AFP

US Open champion Sloane Stephens reached her first Roland Garros quarter-final yesterday, beating Estonia's Anett Kontaveit 6-2, 6-0. Stephens, the 10th seed, had previously made the fourth round for four successive seasons. She will face either Australian Open champion and second seed Caroline Wozniacki or Russia's Daria Kasatkina for a place in the semi-finals. A clearly hobbled Kontaveit hit just five winners but 21 unforced errors in the 52-minute mismatch.