In the 12th Senior National Women Boxing Championships at Bhopal, five times World champ Marycom and World youth champion Sarjubala Devi are among women boxers hitting the ring in the quarter final bouts beginning this evening.AIR correspondent reports that twenty bouts in different weight categories are being held today.World youth champion Sarjubala Devi of Manipur will take on A Puniavathi of Andhra Pradesh while Kalpana Choudhry of Railways Sports Promotion Board will meet K Manasa of Andhra Pradesh. Krishan Thapa and Maya Poudel of host Madhya Pradesh will also try luck for their semi final berths today.Five time world champion M C Marycom and L Sarita Devi of All India Police will play their quarter final bouts tomorrow.The semi final bouts will be played on Saturday.