she did qualify for the WTA Elite Trophy, but she withdrew. Ivanovic ended the year at No. 16. 2016: Final year At the Auckland Open Ivanovic was seeded second but lost in the first round to British qualifier Naomi Broady in straight sets. Ivanovic took a wildcard into the Apia International Sydney and lost in the first round to Karolína Plíšková in straight sets. During the Australian Open, she beat Tammi Patterson and Anastasija Sevastova, both in straight sets to advance to the third round. Ivanovic lost to Madison Keys in three sets despite being up a set and a break in both the second and third sets. During the match Ivanovic's coach, Nigel Sears collapsed and was taken to a hospital where it was later confirmed that he was conscious. Ivanovic's next tournament was the St. Petersburg Ladies' Trophy where she made it through to the semifinals. She beat Margarita Gasparyan & Kateryna Kozlova before losing to Roberta Vinci in straight sets. At the Dubai Tennis Championships, after defeating Daria Gavrilova and world No. 3, Simona Halep, Ivanovic lost to Barbora Strýcová. At Indian Wells she beat Camila Giorgi but then lost to Karolína Plíšková in round 3. In Miami she lost to Timea Bacsinszky. In Stuttgart she won her first-round match but then lost in the second round to Karolína Plíšková. In the first round of the Madrid Open, Ivanovic beat qualifier Kateřina Siniaková in three sets, however, she lost to another qualifier Louisa Chirico in the second round. At the Italian Open, she beat Anastasia Pavlyuchenkova in the first round, but lost to Christina McHale in the second round. Ivanovic had a tough first-round match win at the French Open after she beat Océane Dodin in three sets. She defeated Kurumi Nara in the second round, but lost to Elina Svitolina in the third round. Ivanovic only won 15 matches in 2016 with the last coming in June. She played her career's last professional match in the first round of the US Open against Denisa Allertova and lost in straight sets. On 28 December, having been absent with injury since August, Ivanovic announced her retirement stating that she was no longer able to play to her high standards and win big tournaments, meaning it was time to move on from professional tennis and start a new chapter in her life. At the 2017 French Open, a ceremony