"Our bowlers have had a problem of restricting the opposition since five fielders inside the circle rule has come, but T20 will be a different format and I am hopeful that they will do well," Yuvraj said on the sidelines of Punjab's Vijay Hazare Trophy quarter-final against Railways.
The all-rounder is working hard on his left-arm slow bowling and expects to contribute with the ball too.
"I have been working hard on my bowling and would like to deliver during the World Cup," Yuvraj said.
Yuvraj, who is a part of the Indian squad for the World T20, hoped that India's power-packed batting line-up will do well at the mega event.
"We have players who can really do well in the last five to 10 overs. Myself, Mahi (Mahendra Singh Dhoni) Raina, Rohit and Virat are all capable of winning matches. We have a powerhouse of a line-up," Yuvraj told Star Sports during an interaction.
The left-hander, who will always be remembered for his six sixes off a Stuart Broad over during the inaugural edition, is expecting a "cracker of a contest" against arch-rivals Pakistan in the opening game on March 21.
"It will be great entertainment as Indo-Pak match will be a cracker of a contest," Yuvraj said.
Yuvraj was all praise for his state team skipper Harbhajan Singh, terming him a "legend in Indian cricket".
"The entire Punjab team looks upto Bhajji. Anyone who has played 100 Tests and has taken 400 plus wickets is a legend of the game," he said.

Yuvraj undergoes random dope test
Yuvraj Singh was among three cricketers who underwent random dope tests at the sidelines of the Vijay Hazare Trophy cricket tournament at Eden Gardens.
Yuvraj, who had a forgettable 15-run outing in Punjab's embarrassing 137-run loss to Railways in the quarterfinals, gave his urine sample as part of a routine procedure an hour after the match.
Yuvraj gave his sample more than one hour after the match as most of the members of both the teams had left by then.
Before Yuvraj, Railways skipper Mahesh Rawat, who scored a century, gave his sample along with pacer Anureet Singh.
The samples will be sent to the National Anti Doping Agency in New Delhi and the report will be submitted to the BCCI in a confidential manner.


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