before losing to Team USA. Saville played in Sydney but fell in the round of 16 to eventual champion Johnna Konta. For the second year in a row, Saville made it to the fourth round at the Australian Open beating Naomi Broady, Ana Konjuh and Timea Bacsinszky. She lost to Karolína Plíšková in straight sets. In Indian Wells, Saville fell in the third round while in Miami, she fell in the second round to Lucie Šafářová. She began her clay-court season at the Charleston Open with a win over Alison Riske but losing in the round of 16 to the eventual champion and good friend, Daria Kasatkina. Her best result on clay was at the Italian Open where she had to play the qualifying and reached the quarterfinals, before losing to Kiki Bertens. In August, Saville won her first WTA Tour title at the Connecticut Open, defeating Dominika Cibulková in three sets. 2019 Saville kicked off her 2019 season at the Brisbane International. She lost in the first round to eighth seed Anastasija Sevastova. In Sydney, she was defeated in the first round by qualifier Yulia Putintseva. At the Australian Open, she lost in the first round to Tamara Zidanšek. At the St. Petersburg Ladies' Trophy, Saville was defeated in the first round by Maria Sharapova. During the Fed Cup tie versus the U.S. team, she played one rubber and lost to Danielle Collins. Despite her loss, Australia ended up winning the tie 3–2. At the Mexican Open, she was defeated in the first round by fourth seed Mihaela Buzărnescu. In March, she competed at the Indian Wells Open where she reached the third round, before losing to sixth seed Elina Svitolina. At the Miami Open, she was defeated in the first round by Viktória Kužmová. Beginning her clay-court season at the Morocco Open, she lost in the first round to second seed Hsieh Su-wei. At the Madrid Open, she was defeated in the first round by ninth seed Ash Barty. In Rome, she lost in the first round of qualifying to Irina-Camelia Begu. Playing her final tournament before the French Open at the Internationaux de Strasbourg, she advanced to the quarterfinals where she was defeated by Chloé Paquet. At the French Open, she retired from her first-round match against Aleksandra Krunić due to a thigh injury. In Eastbourne, Saville lost in the final round of qualifying to Fiona Ferro.