Five time World Champion M C Mary Kom and former World Champion L Sarita Devi stormed into the semifinal round of the 12th Senior National Women Boxing Championships being played in Bhopal. M C Mary Kom thrashed her opponent P Nirosha of Andhra Pradesh 17-0. L Sarita Devi defeated Vanlal Duati of Mizoram 26-12 in her quarter final bout. Dolly Singh, Pinky Jangra, Pwilao Basumatari, Pavitra, Mandakini Chann, Aruna Mishra, Heena Tokas, Arensangla and Leishangthem Jamuna Devi have also entered in the semifinal round registering victories over their respective opponents. Semi final bouts will be played tomorrow.