Radwańska began her summer hard court season at the Bank of the West Classic, where she lost a tight three-set match to Angelique Kerber in the quarterfinals. As the defending champion at the Rogers Cup, Radwańska defeated Julia Görges and Alizé Cornet before losing to Simona Halep in the quarterfinal. Due to her first round loss at the Western & Southern Open, Radwańska decided to participate at the Connecticut Open, where she defeated CoCo Vandeweghe and Alizé Cornet but lost to Petra Kvitová in the quarterfinals. At US Open, she defeated Katerina Siniakova and Magda Linette before losing to Madison Keys in the third round.