Bandara's two-day total of 144 and his colleague Sisira Kumara's 154 ensured the team championship trophy for Sri Lanka after fighting hard on the tricky greens and fairways of the Par-72 Delhi Golf Club.
India's Hemendra Chaudhary, who was 13th yesterday, jumped to the second spot after carding one-over for the total of 148.
Amit Kumar and Nepal's Dinesh Prajapati, who shared the lead with Imamul Haque yesterday, again returned with identical scores as both of them came back with a four-over 148 to finish third and fourth respectively.
"I hit 15 greens in regulation and did not take out the driver even once which happened first time in my life. Though, I hit two bogeys throughout the round, I am happy that I am taking at least one trophy back home," the 24-year-old Bandara said.
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In the team Championship played concurrently, Sri Lanka emerged as the winner with a team total of 298, while The Rovers became runner-up with a score of 301. The third spot went to Oil India at 301.
Top 46 players will be vying for the title over the next two days as the cut was applied at 17-over.