India's Manika Batra has entered the girls' singles semifinals in the IITF Polish Junior Open table-tennis tournament.In the quarter-finals at Wladyslawowo in Poland on Thursday. Manika defeated higher-ranked Yui Hamamoto of Japan in six games.The 18-year-old young Indian paddler will take on another Japanese Ayane Morita in the last-four stage.In the pre-quarters, Manika had defeated Germany's Theresa Kraft in five games.