In August, Vinci lost in the first round at Montreal and Cincinnati to Barbora Záhlavová-Strýcová and Sabine Lisicki respectively. Vinci and Errani won their fifth doubles title of the year together in the doubles event at Montreal. They defeated Cara Black and Sania Mirza in the final. At the US Open, Vinci won her first Grand Slam singles match of 2014 by defeating Paula Ormaechea in the first round followed by a three-set win over Irina-Camelia Begu. She then lost to eventual semifinalist Peng Shuai in the third round. Vinci fell out of the top 40 as a result.