Suranjoy Singh and Dilbagh Singh sailed into the second round of the senior national boxing championships here Sunday.

Suranjay of Services Sports Control Board (SSCB) beat N. Shaik of Karnataka 7-0 in the 52-kg category while Dilbagh from Railway Sports Promotion Board defeated Pradip Ghosh of Madhya Pradesh 13-3 in the 69 kg category on the second day of the tournament at the Talkatora Indoor stadium.