In September 2010, she ended runner-up in the women's singles event of the All-Japan Inter-Collegiate Tennis Tournament, losing to fellow Waseda student Hiroko Kuwata in the final.

[4] In October 2010, she led the Waseda women's team to their fifth consecutive All-Japan Collegiate Tennis Championships title and was named MVP of the tournament.

[1] In June 2012, she won her first ITF title, partnering with her former Waseda teammate Kuwata to win the $10k Mie outdoor tournament, defeating Akari Inoue and Kaori Onishi in the final.

[8] In the same month, Tanaka and Kuwata were named as part of Japan's five-member women's tennis team for the 2013 Summer Universiade in Kazan, Russia.

[10] Tanaka was the top seed in the consolation draw of the women's singles and won the final against the fourth member of the Japanese team, Megumi Nishimoto.

[12] In November 2015, Tanaka advanced to the second round of the Ando Securities Open, losing to eventual runner-up, top seed Nao Hibino.

[13] Later the same month, Tanaka and her partner Luksika Kumkhum advanced to the final of the doubles draw of the Dunlop World Challenge, losing in a match tie-break to Akiko Omae and Peangtarn Plipuech.