Former world wrestling champion Seiko Yamamoto is set to make her comeback at the Poland Open in Warsaw from Aug. 13-14, her management revealed Friday.

The 28-year-old Yamamoto announced her comeback in January with the aim of competing at the 2012 London Olympics.

At the world championships, Yamamoto has won four times through 2003 in the weight classes between 51 and 59 kg.

She failed to secure a berth in the 55-kg category at the 2004 Athens Olympics after a defeat to Saori Yoshida.

After retiring in July 2006, Yamamoto gave birth to a baby boy with her husband Hideaki Nagashima, a member of the Japanese national handball team.

Yamamoto comes from a family of wrestlers, starting with her father Ikuei, who competed in the 1972 Munich Olympics. Her elder sister Miu is also a former world champion.

Her elder brother Norifumi "Kid" Yamamoto, who missed out on a spot at the Beijing Olympics last summer after a seven-year hiatus from amateur wrestling, is active as a mixed martial arts fighter.