Why did DC players wear black armbands in match against RR?

DC players were seen wearing black armbands in their IPL match against RR on Friday. They were wearing black armbands to pay condolences to two of their young fans, 14-year-old Abhav Bhatia and 20-year-old Yagya Bhatia, who died in a hit-and-run in Delhi while returning home from DC-RCB match on April 27. DC captain Axar Patel dedicated victory to them.