XtraTime VIDEO: ATK Mohun Bagan beats archrivals SC East Bengal! Arunava Chaudhuri 3 years ago As XtraTime reports, ATK Mohun Bagan beats archrivals SC East Bengal in the first-ever Kolkata derby in the Indian Super League. Read my match report: ATK Mohun Bagan beat SC East Bengal in ISL’s first-ever Kolkata derby!