Erakovic missed the next week of tournaments after the US Open due to taking a training block. These included the Coupe Banque Nationale in Quebec, where she had been runner-up a year earlier, and the loss of points carrying over from that result saw her drop from 76 to 103 in the singles rankings, taking her outside the top 100 for the first time in four years. She resumed a week later in the Pan Pacific Open in Tokyo, becoming top seed in the qualifying tournament, after CoCo Vandeweghe was promoted to the main draw. She raced through her three matches to qualify for the tournament proper, dropping only eight games in total. Her first round match was against fifth seed (and world No. 12) Sara Errani, who sped away to an early 4–0 lead. From there it was all one-way traffic, as Erakovic broke back and then shut out the Italian almost completely, winning 12 of the next 13 games to take the match 6–4, 6–1, the only hiccup being when she dropped her own service in the second game of the second set. Errani had started with an amazing 39 consecutive first service points, and the only times she needed a second serve in the first set were the first two points of her fifth service game. Erakovic was unable to repeat her effort in the second round, falling to Australian left-hander Casey Dellacqua 2–6, 4–6. Her second serve deserted her completely, as she won only three out of 17 in the entire match. She also struggled to break Dellacqua's serve, winning only one of six break points in the first set and one of four in the second. With Erakovic only playing singles in this tournament, Parra Santonja teamed up with Janković to go as far as the semifinals in the doubles.