Tamim Iqbal , Bangladesh's most successful opener and former skipper, has improved following his sudden heart attack while playing a domestic T20 match in Dhaka, doctors have confirmed. Tamim has undergone a successful angiogram surgery in order to address a blockage in one of the arteries of his heart. Following the surgery, Tamim has reportedly even begun walking. However, doctors have reportedly emphasized that the upcoming 48 to 72 hours are still "critical" for Tamim's long-term recovery,