NEW DELHI: Former India coach Vimal Kumar is impressed with the title-winning performance of Lakshya Sen at the India Open but said the young shuttler still needs to work on his endurance and tactical acumen to have a consistent run in the international circuit.
The 20-year-old from Uttarakhand stunned world champion Loh Kean Yew of Singapore 24-22 21-17 in men's singles final to clinch his maiden Super 500 crown at the season-opening India Open here on Sunday.