Top seed Caroline Wozniacki loses in semifinals of American tournament . Fellow Frenchman Richard Gasquet can gain ground by winning Luxembourg Open title . Fourth -ranked Caroline Wozniacki through to final of Stockholm Open . Caroline Wozniacki reaches final of Moscow .
Top seed Jo-Wilfried Tsonga loses in semifinals of Austrian tournament . Fellow Frenchman Richard Gasquet can gain ground by winning Moscow title . Fourth-ranked David Ferrer through to final of Stockholm Open . Caroline Wozniacki reaches final of Luxembourg Open .